Asked by Adam

A boulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. If the boulder's mechanical energy is conserved, what is the speed of the boulder just before it hits the ground?

Answers

Answered by bobpursley
1/2 m vf^2=m*g*height
solve for vf

notice mass divides out.

vf=sqrt(2gh)
Answered by Adam
How do you figure miles per hour?
Answered by bobpursley
what do you mean, Adam?
Answered by Adam
I meant meters per second
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