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April 19, 2014

Homework Help: Physics

Posted by Priscilla on Monday, January 4, 2010 at 4:38pm.

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

GIVEN:
mg = 2.0 kg
h/d = 5 m

PE = mgh

PE = (2)(5)
PE = 10 J

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