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acts against movement. Friction on an automobile brake slows the motion of the vehicle.</dd> </dl> <dl> <dt>Question: Who developed the laws of motion?</dt> <dd>Answer: Sir Isaac Newton (1642–1727) developed the laws of motion, describing the movements of objects in space.</dd> </dl> <dl> <dt>Question: In what year was the second theory of relativity published?</dt> <dd>Answer: In 1916 Albert Einstein published his second (or general) theory of relativity. </dd> </dl> <dl> <dt>Question: Which branch of physics is particularly useful in designing bridges?</dt> <dd>Answer: Statics is the study of matter at rest. Statics deals with the balancing of forces with appropriate resistances to keep matter at rest. 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