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**Conservation of mechanical energy ?**

A 0.80kg coconut is growing 10m above the ground in its palm tree. The tree is just at the edge of a cliff that is 15 meters tall.

a>What would the maximum speed of the coconut be if it fell to theground beneath the tree?

b>What would the maximum speed be if it fell from the tree to the bottom of the cliff?

Equations:

Ep=mgh

Ek= -Ep

Ek= (1/2)mv^2

## The Attempt at a Solution

So I've figured out Ep= 78.48J

However,Im not sure how to relate that to Ek so I could later solve for v?