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April 24, 2014

Homework Help: Physics (Potential & Kinetic energy)

Posted by Anna on Monday, January 11, 2010 at 7:32pm.

A 2.0 kg rock falls from a height of 25 m to a point 20 m above the ground.
a) how much potential energy does it lose?
b) How much kinetic energy does it gain?

Thanks.

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