(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

See link.

http://img515.imageshack.us/img515/6383/picture15lj9.jpg [Broken]

2. Relevant equations

Imp = integral F dt

mv = momentum

mgh

1/2 mv^2

3. The attempt at a solution

I drew to FBD's to find the impulses and such, but I just don't know what to do. I then tried to use impulse momentum combined with conservation of energy, but got the WRONG answer. I can take a picture of my work, but it'll mean nothing...

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