How much potential energy did the rock have before it was
A rock has a mass of .45 kg is dropped from a building window. The rock strikes the ground with a velocity of 25 m/s. How much potential energy did the rock have before it was dropped from the window? Assume no energy was lost to air resistance.
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a rock has a mass of 45 kg is dropped from a building window the rock strikes the ground with a velocity of 25 ms how
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