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## Homework Statement

Here is the question I am having issues with.... Below are my questions regarding it.

## Homework Equations

## The Attempt at a Solution

Now when looking at this, first I would assume I use conservation of momentum.

(K + Ug + Us)i = (K + Ug + Us)f + Ff d

Now for the first part (left side of the equation) my text says the following.

0 + 0 + 1/2Kx^2

I dont get that. So when its at the start, There is no Kinetic energy and no potential evergy, and for the spring energy its just 1/2Kx^2 ?

I dont understand how to figure out the right side of that equation, and mainly finding the height, as outlined in the question.

THanks!!