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[o]" accesskey="o" class=""><span>Logg inn</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Fleire val" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personlege verktøy" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personlege verktøy</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Brukarmeny" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_nn.wikipedia.org&uselang=nn"><span>Gåver</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Opprett_konto&returnto=Unnsleppingsfart" title="Me oppfordrar til at du oppretter ein konto og loggar inn, men det er ikkje påkravd."><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Opprett konto</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Spesial:Logg_inn&returnto=Unnsleppingsfart" title="Det er ikkje obligatorisk å logga inn, men medfører mange fordelar. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Logg inn</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Sider for utlogga bidragsytarar <a href="/wiki/Hjelp:Introduksjon" aria-label="Lær meir om redigering"><span>lær meir</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Spesial:Bidraga_mine" title="Liste over endringar gjorde frå denne IP-adressa [y]" accesskey="y"><span>Bidrag</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Spesial:Diskusjonssida_mi" title="Diskusjon om endringar gjorde av denne ip-adressa [n]" accesskey="n"><span>Diskusjon</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Nettstad"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Innhald" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Innhald</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">gøym</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Byrjinga</div> </a> </li> <li id="toc-Å_rekne_ut_unnsleppingsfarta_frå_ein_einskild_lekam" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Å_rekne_ut_unnsleppingsfarta_frå_ein_einskild_lekam"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Å rekne ut unnsleppingsfarta frå ein einskild lekam</span> </div> </a> <button aria-controls="toc-Å_rekne_ut_unnsleppingsfarta_frå_ein_einskild_lekam-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Vis/skjul underseksjonen Å rekne ut unnsleppingsfarta frå ein einskild lekam</span> </button> <ul id="toc-Å_rekne_ut_unnsleppingsfarta_frå_ein_einskild_lekam-sublist" class="vector-toc-list"> <li id="toc-Døme" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Døme"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Døme</span> </div> </a> <ul id="toc-Døme-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Innhald" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Vis/skjul innhaldslista" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Vis/skjul innhaldslista</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Unnsleppingsfart</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Gå til ein artikkel på eit anna språk. Tilgjengeleg på 73 språk" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-73" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">73 språk</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Unnslipningshastighet" title="Unnslipningshastighet – norsk bokmål" lang="nb" hreflang="nb" data-title="Unnslipningshastighet" data-language-autonym="Norsk bokmål" data-language-local-name="norsk bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Flykthastighet" title="Flykthastighet – svensk" lang="sv" hreflang="sv" data-title="Flykthastighet" data-language-autonym="Svenska" data-language-local-name="svensk" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Undvigelseshastighed" title="Undvigelseshastighed – dansk" lang="da" hreflang="da" data-title="Undvigelseshastighed" data-language-autonym="Dansk" data-language-local-name="dansk" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Fluchtgeschwindigkeit" title="Fluchtgeschwindigkeit – sveitsertysk" lang="gsw" hreflang="gsw" data-title="Fluchtgeschwindigkeit" data-language-autonym="Alemannisch" data-language-local-name="sveitsertysk" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D8%B1%D8%B9%D8%A9_%D8%A7%D9%84%D8%A5%D9%81%D9%84%D8%A7%D8%AA" title="سرعة الإفلات – arabisk" lang="ar" hreflang="ar" data-title="سرعة الإفلات" data-language-autonym="العربية" data-language-local-name="arabisk" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Velocidat_d%27escape" title="Velocidat d'escape – aragonsk" lang="an" hreflang="an" data-title="Velocidat d'escape" data-language-autonym="Aragonés" data-language-local-name="aragonsk" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Velocid%C3%A1_d%27escape" title="Velocidá d'escape – asturisk" lang="ast" hreflang="ast" data-title="Velocidá d'escape" data-language-autonym="Asturianu" data-language-local-name="asturisk" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C4%B0kinci_kosmik_s%C3%BCr%C9%99t" title="İkinci kosmik sürət – aserbajdsjansk" lang="az" hreflang="az" data-title="İkinci kosmik sürət" data-language-autonym="Azərbaycanca" data-language-local-name="aserbajdsjansk" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AE%E0%A7%81%E0%A6%95%E0%A7%8D%E0%A6%A4%E0%A6%BF%E0%A6%AC%E0%A7%87%E0%A6%97" title="মুক্তিবেগ – bengali" lang="bn" hreflang="bn" data-title="মুক্তিবেগ" data-language-autonym="বাংলা" data-language-local-name="bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%94%D1%80%D1%83%D0%B3%D0%B0%D1%8F_%D0%BA%D0%B0%D1%81%D0%BC%D1%96%D1%87%D0%BD%D0%B0%D1%8F_%D1%81%D0%BA%D0%BE%D1%80%D0%B0%D1%81%D1%86%D1%8C" title="Другая касмічная скорасць – belarusisk" lang="be" hreflang="be" data-title="Другая касмічная скорасць" data-language-autonym="Беларуская" data-language-local-name="belarusisk" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%94%D1%80%D1%83%D0%B3%D0%B0%D1%8F_%D0%BA%D0%B0%D1%81%D1%8C%D0%BC%D1%96%D1%87%D0%BD%D0%B0%D1%8F_%D1%85%D1%83%D1%82%D0%BA%D0%B0%D1%81%D1%8C%D1%86%D1%8C" title="Другая касьмічная хуткасьць – belarusisk (klassisk ortografi)" lang="be-tarask" hreflang="be-tarask" data-title="Другая касьмічная хуткасьць" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="belarusisk (klassisk ortografi)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%92%D1%82%D0%BE%D1%80%D0%B0_%D0%BA%D0%BE%D1%81%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0_%D1%81%D0%BA%D0%BE%D1%80%D0%BE%D1%81%D1%82" title="Втора космическа скорост – bulgarsk" lang="bg" hreflang="bg" data-title="Втора космическа скорост" data-language-autonym="Български" data-language-local-name="bulgarsk" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Velocitat_d%27escapament" title="Velocitat d'escapament – katalansk" lang="ca" hreflang="ca" data-title="Velocitat d'escapament" data-language-autonym="Català" data-language-local-name="katalansk" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C3%9Anikov%C3%A1_rychlost" title="Úniková rychlost – tsjekkisk" lang="cs" hreflang="cs" data-title="Úniková rychlost" data-language-autonym="Čeština" data-language-local-name="tsjekkisk" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Paokiirus" title="Paokiirus – estisk" lang="et" hreflang="et" data-title="Paokiirus" data-language-autonym="Eesti" data-language-local-name="estisk" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A4%CE%B1%CF%87%CF%8D%CF%84%CE%B7%CF%84%CE%B1_%CE%B4%CE%B9%CE%B1%CF%86%CF%85%CE%B3%CE%AE%CF%82" title="Ταχύτητα διαφυγής – gresk" lang="el" hreflang="el" data-title="Ταχύτητα διαφυγής" data-language-autonym="Ελληνικά" data-language-local-name="gresk" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Escape_velocity" title="Escape velocity – engelsk" lang="en" hreflang="en" data-title="Escape velocity" data-language-autonym="English" data-language-local-name="engelsk" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Velocidad_de_escape" title="Velocidad de escape – spansk" lang="es" hreflang="es" data-title="Velocidad de escape" data-language-autonym="Español" data-language-local-name="spansk" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Liberiga_rapido" title="Liberiga rapido – esperanto" lang="eo" hreflang="eo" data-title="Liberiga rapido" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Ihes-abiadura" title="Ihes-abiadura – baskisk" lang="eu" hreflang="eu" data-title="Ihes-abiadura" data-language-autonym="Euskara" data-language-local-name="baskisk" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%B1%D8%B9%D8%AA_%DA%AF%D8%B1%DB%8C%D8%B2" title="سرعت گریز – persisk" lang="fa" hreflang="fa" data-title="سرعت گریز" data-language-autonym="فارسی" data-language-local-name="persisk" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Vitesse_de_lib%C3%A9ration" title="Vitesse de libération – fransk" lang="fr" hreflang="fr" data-title="Vitesse de libération" data-language-autonym="Français" data-language-local-name="fransk" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Luas_%C3%A9alaithe" title="Luas éalaithe – irsk" lang="ga" hreflang="ga" data-title="Luas éalaithe" data-language-autonym="Gaeilge" data-language-local-name="irsk" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Velocidade_de_escape" title="Velocidade de escape – galisisk" lang="gl" hreflang="gl" data-title="Velocidade de escape" data-language-autonym="Galego" data-language-local-name="galisisk" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%83%88%EC%B6%9C_%EC%86%8D%EB%8F%84" title="탈출 속도 – koreansk" lang="ko" hreflang="ko" data-title="탈출 속도" data-language-autonym="한국어" data-language-local-name="koreansk" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B5%D6%80%D5%AF%D6%80%D5%B8%D6%80%D5%A4_%D5%BF%D5%AB%D5%A5%D5%A6%D5%A5%D6%80%D5%A1%D5%AF%D5%A1%D5%B6_%D5%A1%D6%80%D5%A1%D5%A3%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Երկրորդ տիեզերական արագություն – armensk" lang="hy" hreflang="hy" data-title="Երկրորդ տիեզերական արագություն" data-language-autonym="Հայերեն" data-language-local-name="armensk" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B2%E0%A4%BE%E0%A4%AF%E0%A4%A8_%E0%A4%B5%E0%A5%87%E0%A4%97" title="पलायन वेग – hindi" lang="hi" hreflang="hi" data-title="पलायन वेग" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Brzina_osloba%C4%91anja" title="Brzina oslobađanja – kroatisk" lang="hr" hreflang="hr" data-title="Brzina oslobađanja" data-language-autonym="Hrvatski" data-language-local-name="kroatisk" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Kelajuan_lepas" title="Kelajuan lepas – indonesisk" lang="id" hreflang="id" data-title="Kelajuan lepas" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesisk" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Velocit%C3%A0_di_fuga" title="Velocità di fuga – italiensk" lang="it" hreflang="it" data-title="Velocità di fuga" data-language-autonym="Italiano" data-language-local-name="italiensk" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%94%D7%99%D7%A8%D7%95%D7%AA_%D7%9E%D7%99%D7%9C%D7%95%D7%98" title="מהירות מילוט – hebraisk" lang="he" hreflang="he" data-title="מהירות מילוט" data-language-autonym="עברית" data-language-local-name="hebraisk" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B5%E0%B2%BF%E0%B2%AE%E0%B3%8B%E0%B2%9A%E0%B2%A8_%E0%B2%B5%E0%B3%87%E0%B2%97" title="ವಿಮೋಚನ ವೇಗ – kannada" lang="kn" hreflang="kn" data-title="ವಿಮೋಚನ ವೇಗ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9B%E1%83%94%E1%83%9D%E1%83%A0%E1%83%94_%E1%83%99%E1%83%9D%E1%83%A1%E1%83%9B%E1%83%9D%E1%83%A1%E1%83%A3%E1%83%A0%E1%83%98_%E1%83%A1%E1%83%98%E1%83%A9%E1%83%A5%E1%83%90%E1%83%A0%E1%83%94" title="მეორე კოსმოსური სიჩქარე – georgisk" lang="ka" hreflang="ka" data-title="მეორე კოსმოსური სიჩქარე" data-language-autonym="ქართული" data-language-local-name="georgisk" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%95%D0%BA%D1%96%D0%BD%D1%88%D1%96_%D0%BA%D0%BE%D1%81%D0%BC%D0%BE%D1%81%D1%82%D1%8B%D2%9B_%D0%B6%D1%8B%D0%BB%D0%B4%D0%B0%D0%BC%D0%B4%D1%8B%D2%9B" title="Екінші космостық жылдамдық – kasakhisk" lang="kk" hreflang="kk" data-title="Екінші космостық жылдамдық" data-language-autonym="Қазақша" data-language-local-name="kasakhisk" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Celeritas_fugae" title="Celeritas fugae – latin" lang="la" hreflang="la" data-title="Celeritas fugae" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Otrais_kosmiskais_%C4%81trums" title="Otrais kosmiskais ātrums – latvisk" lang="lv" hreflang="lv" data-title="Otrais kosmiskais ātrums" data-language-autonym="Latviešu" data-language-local-name="latvisk" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Antrasis_kosminis_greitis" title="Antrasis kosminis greitis – litauisk" lang="lt" hreflang="lt" data-title="Antrasis kosminis greitis" data-language-autonym="Lietuvių" data-language-local-name="litauisk" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Kozmikus_sebess%C3%A9g" title="Kozmikus sebesség – ungarsk" lang="hu" hreflang="hu" data-title="Kozmikus sebesség" data-language-autonym="Magyar" data-language-local-name="ungarsk" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%92%D1%82%D0%BE%D1%80%D0%B0_%D0%BA%D0%BE%D1%81%D0%BC%D0%B8%D1%87%D0%BA%D0%B0_%D0%B1%D1%80%D0%B7%D0%B8%D0%BD%D0%B0" title="Втора космичка брзина – makedonsk" lang="mk" hreflang="mk" data-title="Втора космичка брзина" data-language-autonym="Македонски" data-language-local-name="makedonsk" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AA%E0%B4%B2%E0%B4%BE%E0%B4%AF%E0%B4%A8_%E0%B4%AA%E0%B5%8D%E0%B4%B0%E0%B4%B5%E0%B5%87%E0%B4%97%E0%B4%82" title="പലായന പ്രവേഗം – malayalam" lang="ml" hreflang="ml" data-title="പലായന പ്രവേഗം" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AE%E0%A5%81%E0%A4%95%E0%A5%8D%E0%A4%A4%E0%A4%BF%E0%A4%B5%E0%A5%87%E0%A4%97" title="मुक्तिवेग – marathi" lang="mr" hreflang="mr" data-title="मुक्तिवेग" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Halaju_lepas" title="Halaju lepas – malayisk" lang="ms" hreflang="ms" data-title="Halaju lepas" data-language-autonym="Bahasa Melayu" data-language-local-name="malayisk" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ontsnappingssnelheid" title="Ontsnappingssnelheid – nederlandsk" lang="nl" hreflang="nl" data-title="Ontsnappingssnelheid" data-language-autonym="Nederlands" data-language-local-name="nederlandsk" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AA%E0%A4%B2%E0%A4%BE%E0%A4%AF%E0%A4%A8_%E0%A4%B5%E0%A5%87%E0%A4%97" title="पलायन वेग – nepalsk" lang="ne" hreflang="ne" data-title="पलायन वेग" data-language-autonym="नेपाली" data-language-local-name="nepalsk" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%84%B1%E5%87%BA%E9%80%9F%E5%BA%A6" title="脱出速度 – japansk" lang="ja" hreflang="ja" data-title="脱出速度" data-language-autonym="日本語" data-language-local-name="japansk" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Velocitat_de_liberacion" title="Velocitat de liberacion – oksitansk" lang="oc" hreflang="oc" data-title="Velocitat de liberacion" data-language-autonym="Occitan" data-language-local-name="oksitansk" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Ikkinchi_kosmik_tezlik" title="Ikkinchi kosmik tezlik – usbekisk" lang="uz" hreflang="uz" data-title="Ikkinchi kosmik tezlik" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbekisk" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%87%E0%A8%B8%E0%A8%95%E0%A9%87%E0%A8%AA_%E0%A8%97%E0%A8%A4%E0%A9%80" title="ਇਸਕੇਪ ਗਤੀ – panjabi" lang="pa" hreflang="pa" data-title="ਇਸਕੇਪ ਗਤੀ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="panjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A7%D8%B3%DA%A9%DB%8C%D9%BE_%D9%88%D9%84%D8%A7%D8%B3%D9%B9%DB%8C" title="اسکیپ ولاسٹی – vestpunjabi" lang="pnb" hreflang="pnb" data-title="اسکیپ ولاسٹی" data-language-autonym="پنجابی" data-language-local-name="vestpunjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Andi_d%27evasion" title="Andi d'evasion – piemontesisk" lang="pms" hreflang="pms" data-title="Andi d'evasion" data-language-autonym="Piemontèis" data-language-local-name="piemontesisk" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Pr%C4%99dko%C5%9B%C4%87_ucieczki" title="Prędkość ucieczki – polsk" lang="pl" hreflang="pl" data-title="Prędkość ucieczki" data-language-autonym="Polski" data-language-local-name="polsk" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Velocidade_de_escape" title="Velocidade de escape – portugisisk" lang="pt" hreflang="pt" data-title="Velocidade de escape" data-language-autonym="Português" data-language-local-name="portugisisk" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Vitez%C4%83_cosmic%C4%83" title="Viteză cosmică – rumensk" lang="ro" hreflang="ro" data-title="Viteză cosmică" data-language-autonym="Română" data-language-local-name="rumensk" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%92%D1%82%D0%BE%D1%80%D0%B0%D1%8F_%D0%BA%D0%BE%D1%81%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B0%D1%8F_%D1%81%D0%BA%D0%BE%D1%80%D0%BE%D1%81%D1%82%D1%8C" title="Вторая космическая скорость – russisk" lang="ru" hreflang="ru" data-title="Вторая космическая скорость" data-language-autonym="Русский" data-language-local-name="russisk" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%80%E0%B7%92%E0%B6%BA%E0%B7%9D%E0%B6%9C_%E0%B6%B4%E0%B7%8A%E2%80%8D%E0%B6%BB%E0%B7%80%E0%B7%9A%E0%B6%9C%E0%B6%BA" title="වියෝග ප්‍රවේගය – singalesisk" lang="si" hreflang="si" data-title="වියෝග ප්‍රවේගය" data-language-autonym="සිංහල" data-language-local-name="singalesisk" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Escape_speed" title="Escape speed – enkel engelsk" lang="en-simple" hreflang="en-simple" data-title="Escape speed" data-language-autonym="Simple English" data-language-local-name="enkel engelsk" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/%C3%9Anikov%C3%A1_r%C3%BDchlos%C5%A5" title="Úniková rýchlosť – slovakisk" lang="sk" hreflang="sk" data-title="Úniková rýchlosť" data-language-autonym="Slovenčina" data-language-local-name="slovakisk" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Ube%C5%BEna_hitrost" title="Ubežna hitrost – slovensk" lang="sl" hreflang="sl" data-title="Ubežna hitrost" data-language-autonym="Slovenščina" data-language-local-name="slovensk" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%AE%DB%8E%D8%B1%D8%A7%DB%8C%DB%8C%DB%8C_%DA%BE%DB%95%DA%B5%DA%BE%D8%A7%D8%AA%D9%86" title="خێراییی ھەڵھاتن – sorani" lang="ckb" hreflang="ckb" data-title="خێراییی ھەڵھاتن" data-language-autonym="کوردی" data-language-local-name="sorani" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%94%D1%80%D1%83%D0%B3%D0%B0_%D0%BA%D0%BE%D1%81%D0%BC%D0%B8%D1%87%D0%BA%D0%B0_%D0%B1%D1%80%D0%B7%D0%B8%D0%BD%D0%B0" title="Друга космичка брзина – serbisk" lang="sr" hreflang="sr" data-title="Друга космичка брзина" data-language-autonym="Српски / srpski" data-language-local-name="serbisk" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Brzina_osloba%C4%91anja" title="Brzina oslobađanja – serbokroatisk" lang="sh" hreflang="sh" data-title="Brzina oslobađanja" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbokroatisk" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Pakonopeus" title="Pakonopeus – finsk" lang="fi" hreflang="fi" data-title="Pakonopeus" data-language-autonym="Suomi" data-language-local-name="finsk" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%BF%E0%AE%9F%E0%AF%81%E0%AE%AA%E0%AE%9F%E0%AF%81_%E0%AE%A4%E0%AE%BF%E0%AE%9A%E0%AF%88%E0%AE%B5%E0%AF%87%E0%AE%95%E0%AE%AE%E0%AF%8D" title="விடுபடு திசைவேகம் – tamil" lang="ta" hreflang="ta" data-title="விடுபடு திசைவேகம்" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Tazzla_n_teslullit" title="Tazzla n teslullit – kabylsk" lang="kab" hreflang="kab" data-title="Tazzla n teslullit" data-language-autonym="Taqbaylit" data-language-local-name="kabylsk" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%C4%B0ken%C3%A7e_%C4%9F%C3%A4l%C3%A4mi_tizlek" title="İkençe ğälämi tizlek – tatarisk" lang="tt" hreflang="tt" data-title="İkençe ğälämi tizlek" data-language-autonym="Татарча / tatarça" data-language-local-name="tatarisk" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AA%E0%B0%B2%E0%B0%BE%E0%B0%AF%E0%B0%A8_%E0%B0%B5%E0%B1%87%E0%B0%97%E0%B0%AE%E0%B1%81" title="పలాయన వేగము – telugu" lang="te" hreflang="te" data-title="పలాయన వేగము" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B9%80%E0%B8%A3%E0%B9%87%E0%B8%A7%E0%B8%AB%E0%B8%A5%E0%B8%B8%E0%B8%94%E0%B8%9E%E0%B9%89%E0%B8%99" title="ความเร็วหลุดพ้น – thai" lang="th" hreflang="th" data-title="ความเร็วหลุดพ้น" data-language-autonym="ไทย" data-language-local-name="thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kurtulma_h%C4%B1z%C4%B1" title="Kurtulma hızı – tyrkisk" lang="tr" hreflang="tr" data-title="Kurtulma hızı" data-language-autonym="Türkçe" data-language-local-name="tyrkisk" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%94%D1%80%D1%83%D0%B3%D0%B0_%D0%BA%D0%BE%D1%81%D0%BC%D1%96%D1%87%D0%BD%D0%B0_%D1%88%D0%B2%D0%B8%D0%B4%D0%BA%D1%96%D1%81%D1%82%D1%8C" title="Друга космічна швидкість – ukrainsk" lang="uk" hreflang="uk" data-title="Друга космічна швидкість" data-language-autonym="Українська" data-language-local-name="ukrainsk" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A7%D8%B3%DA%A9%DB%8C%D9%BE_%D9%88%D9%84%D8%A7%D8%B3%D9%B9%DB%8C" title="اسکیپ ولاسٹی – urdu" lang="ur" hreflang="ur" data-title="اسکیپ ولاسٹی" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/T%E1%BB%91c_%C4%91%E1%BB%99_v%C5%A9_tr%E1%BB%A5_c%E1%BA%A5p_2" title="Tốc độ vũ trụ cấp 2 – vietnamesisk" lang="vi" hreflang="vi" data-title="Tốc độ vũ trụ cấp 2" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamesisk" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%80%83%E9%80%B8%E9%80%9F%E5%BA%A6" title="逃逸速度 – kantonesisk" lang="yue" hreflang="yue" data-title="逃逸速度" data-language-autonym="粵語" data-language-local-name="kantonesisk" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%80%83%E9%80%B8%E9%80%9F%E5%BA%A6" title="逃逸速度 – kinesisk" lang="zh" hreflang="zh" data-title="逃逸速度" data-language-autonym="中文" data-language-local-name="kinesisk" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q166530#sitelinks-wikipedia" title="Endra mellomspråklege lenkjer" class="wbc-editpage">Endra lenkjer</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namnerom"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Unnsleppingsfart" title="Vis innhaldssida [c]" accesskey="c"><span>Artikkel</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Diskusjon:Unnsleppingsfart" rel="discussion" title="Diskusjon om 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class="mw-list-item"><a href="/w/index.php?title=Spesial:Siter&page=Unnsleppingsfart&id=3398174&wpFormIdentifier=titleform" title="Informasjon om korleis ein siterer denne sida"><span>Siter denne sida</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Spesial:UrlShortener&url=https%3A%2F%2Fnn.wikipedia.org%2Fwiki%2FUnnsleppingsfart"><span>Hent kort URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Spesial:QrCode&url=https%3A%2F%2Fnn.wikipedia.org%2Fwiki%2FUnnsleppingsfart"><span>Last ned QR-kode</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Skriv ut/eksporter </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Spesial:Bok&bookcmd=book_creator&referer=Unnsleppingsfart"><span>Opprett ei bok</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Spesial:DownloadAsPdf&page=Unnsleppingsfart&action=show-download-screen"><span>Last ned som PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Unnsleppingsfart&printable=yes" title="Utskriftsversjon av sida [p]" accesskey="p"><span>Utskriftsversjon</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Sideverktøy"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Utsjånad"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Utsjånad</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">flytt til sidefeltet</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">gøym</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Frå Wikipedia – det frie oppslagsverket</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nn" dir="ltr"><p><b>Unnsleppingsfart</b> er i fysikk minimumsfarta ein lekam utan framdriftsmekanismar må ha for å sleppe unna <a href="/wiki/Gravitasjonsfelt" title="Gravitasjonsfelt">gravitasjonsfeltet</a> til ei kjelde ved ein gjeven posisjon. Om unnsleppingsfarta ikkje er stor nok vil lekamen falle attende eller gå inn i bane rundt kjeldelekamen. </p><p>Russarane kalla unnsleppingsfarten «andre kosmiske snøggleik». </p> <div class="mw-heading mw-heading2"><h2 id="Å_rekne_ut_unnsleppingsfarta_frå_ein_einskild_lekam"><span id=".C3.85_rekne_ut_unnsleppingsfarta_fr.C3.A5_ein_einskild_lekam"></span>Å rekne ut unnsleppingsfarta frå ein einskild lekam</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Unnsleppingsfart&veaction=edit&section=1" title="Endre bolk: Å rekne ut unnsleppingsfarta frå ein einskild lekam" class="mw-editsection-visualeditor"><span>endre</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Unnsleppingsfart&action=edit&section=1" title="Rediger kildekoden til seksjonen Å rekne ut unnsleppingsfarta frå ein einskild lekam"><span>endre wikiteksten</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>I det enklaste tilfellet er unnsleppingsfart frå ein enkel lekam: </p> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\begin{matrix}{\frac {1}{2}}\end{matrix}}mv_{e}^{2}={\frac {GMm}{r}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mtable rowspacing="4pt" columnspacing="1em"> <mtr> <mtd> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mn>1</mn> <mn>2</mn> </mfrac> </mrow> </mtd> </mtr> </mtable> </mrow> <mi>m</mi> <msubsup> <mi>v</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msubsup> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <mfrac> <mrow> <mi>G</mi> <mi>M</mi> <mi>m</mi> </mrow> <mi>r</mi> </mfrac> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\begin{matrix}{\frac {1}{2}}\end{matrix}}mv_{e}^{2}={\frac {GMm}{r}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/82adbb66a9711acd11a9c7d1be9ac4159bdef8ab" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.838ex; width:16.876ex; height:5.343ex;" alt="{\displaystyle {\begin{matrix}{\frac {1}{2}}\end{matrix}}mv_{e}^{2}={\frac {GMm}{r}}}"></span></dd></dl> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle v_{e}={\sqrt {\frac {2GM}{r}}}={\sqrt {\frac {2\mu }{r}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>v</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> </mrow> </msub> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mfrac> <mrow> <mn>2</mn> <mi>G</mi> <mi>M</mi> </mrow> <mi>r</mi> </mfrac> </msqrt> </mrow> <mo>=</mo> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mfrac> <mrow> <mn>2</mn> <mi>μ</mi> </mrow> <mi>r</mi> </mfrac> </msqrt> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle v_{e}={\sqrt {\frac {2GM}{r}}}={\sqrt {\frac {2\mu }{r}}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/43d174d9dc8f4d1f295e6ed90a2f443829309a4b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -2.338ex; width:22.638ex; height:6.343ex;" alt="{\displaystyle v_{e}={\sqrt {\frac {2GM}{r}}}={\sqrt {\frac {2\mu }{r}}}}"></span></dd></dl> <p>der <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle v_{e}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msub> <mi>v</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>e</mi> </mrow> </msub> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle v_{e}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3271a14c35fc1b6cb549d4d462e8d3255185cc9d" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:2.126ex; height:2.009ex;" alt="{\displaystyle v_{e}}"></span> er unnsleppingsfarta, <i>G</i> er <a href="/wiki/Gravitasjonskonstanten" title="Gravitasjonskonstanten">gravitasjonskonstanten</a>, <i>M</i> er <a href="/w/index.php?title=Massen&action=edit&redlink=1" class="new" title="Massen (sida finst ikkje)">massen</a> av lekamen reist frå, <i>m</i> er <a href="/w/index.php?title=Massen&action=edit&redlink=1" class="new" title="Massen (sida finst ikkje)">massen</a> av det unnsleppande objektet (kan strykast mot seg sjølv), og <i>r</i> er <a href="/wiki/Avstand" title="Avstand">avstanden</a> mellom lekamssenteret og punktet unnsleppingspunktet blir rekna ut, og μ er den <a href="/w/index.php?title=Standard_tyngdeparameter&action=edit&redlink=1" class="new" title="Standard tyngdeparameter (sida finst ikkje)">standard tyngdeparameteren</a>. </p><p>Denne formelen tek ikkje omsyn til eventuell atmosfærisk (luft)motstand. </p><p>Retninga på utskytinga spelar inga rolle for unnsleppingsfarta, så lenge det er fri bane og lekamen ikkje kolliderer med noko. </p> <div class="mw-heading mw-heading3"><h3 id="Døme"><span id="D.C3.B8me"></span>Døme</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Unnsleppingsfart&veaction=edit&section=2" title="Endre bolk: Døme" class="mw-editsection-visualeditor"><span>endre</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Unnsleppingsfart&action=edit&section=2" title="Rediger kildekoden til seksjonen Døme"><span>endre wikiteksten</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Unnsleppingsfarta på overflata av nokre kjende himmellekamar: </p> <ul><li><a href="/wiki/M%C3%A5nen" title="Månen">Månen</a>: 2,4 km/s</li> <li><a href="/wiki/Jorda" title="Jorda">Jorda</a>: 11,2 km/s</li> <li><a href="/wiki/Jupiter" class="mw-disambig" title="Jupiter">Jupiter</a>: 59,5 km/s</li> <li><a href="/wiki/Sola" title="Sola">Sola</a>: 617,5 km/s<div class="spire" style="clear: both;"><span typeof="mw:File"><a href="/wiki/Fil:P_space.png" class="mw-file-description" title="Spire"><img alt="Spire" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/P_space.png/20px-P_space.png" decoding="async" width="20" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/P_space.png/30px-P_space.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8b/P_space.png/40px-P_space.png 2x" data-file-width="77" data-file-height="68" /></a></span> Denne <a href="/wiki/Kategori:Astronomispirer" title="Kategori:Astronomispirer">astronomiartikkelen</a> er ei <b><a href="/wiki/Wikipedia:Spire" title="Wikipedia:Spire">spire</a></b>. 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