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If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
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Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground.what is his gravitational potential energy above the ground?
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Two buses have equal masses (5,000 kg). Bus A is moving at a velocity of 20 m/s west. Bus B is at re...
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