A 2.1 kg rock initially at rest loses 419 J of potential energy while falling to the ground. Assume that air resistance is negligible.
Calculate the kinetic energy that the rock gains while falling.
1x
What is the rock's speed just before it strikes the ground?
m/s
-419
Answers: 2
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A 2.1 kg rock initially at rest loses 419 J of potential energy while falling to the ground. Assume...
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