A 20 kg rock that is originally at rest loses 407j of
A 2.0 kg rock that is originally at rest loses 407j of potential energy while falling to the ground. Compute the kinetic energy that the rock gains while falling. What is the rock speed now before it strikes the ground?
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a 20 kg rock that is originally at rest loses 407j of potential energy while falling to the ground compute the kinetic
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