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Physics, 20.07.2019 18:00 alwaysneedhelp84

A20.0-kg rock is dropped and hits the ground at a speed of 90.0 m/s. calculate the rock’s gravitational potential energy before it was dropped. (ignore the effects of friction.)

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A20.0-kg rock is dropped and hits the ground at a speed of 90.0 m/s. calculate the rock’s gravitatio...
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