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Explain why the brakes of a car get much hotter than the brakes of a bicycle?
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Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j
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When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.
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What is an electric motor? explain its operation. 2-3 sentence
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Explain why the brakes of a car get much hotter than the brakes of a bicycle?...
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