Homework Help: physics

Posted by bob on Monday, February 6, 2012 at 7:45pm.

a 20 kg rock is on the edge of a 100 m cliff . the rock falls from the cliff , what is its kinetic energy just before it hits the ground ?

physics - drwls, Monday, February 6, 2012 at 7:50pm
M*g*H

H = 100 m
M = 20 kg
g = 9.8 m/s^2

The answer will be in Joules.

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