Asked by Emeline

A 7.40 lb rock sits on top of a 76.0 foot cliff. it is pushed off. What is the energy in Joules of the rock just before it hits the ground?

Answers

Answered by drwls
If you want it in Joules, use SI units for mass, g and height H.

E= M g H is the kinetic energy just before it hits the ground

M = 3.36 kg
g = 9.8 m/s^2
H = 23.17 meters
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