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OpenStudy (anonymous):

A rock bounces down a mountain. When will its kinetic energy be greatest?

OpenStudy (anonymous):

just before hits the ground

OpenStudy (anonymous):

No, its kinetic energy will be greatest when it reaches the highest speed. As the rock bounces, it could slow down, so it will not continue to accelerate uniformly as it travels. You can not assume that it will reach its highest speed just before it reaches the bottom.

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