Mathematics, 23.06.2021 18:40 aaron2113
A 20.0-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.)
1,800 J
81,000 J
8,100 J
18,000 J
Answers: 3
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A 20.0-kg rock is dropped and hits the ground at a speed of 90.0 m/s.
Calculate the rock’s gravitat...
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