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**1. Homework Statement**

http://img138.imageshack.us/img138/9476/phyus3mu7.jpg [Broken]

[/URL]**2. Homework Equations**

Conservation of momentum

Conservation of kinetic energy

**3. The Attempt at a Solution**

I really have no idea. I dont know the velocity of A before the collision and i dont know the speed of A after the collision. So i cant use the conservation of momentum. I also know its not an elastic collision because im told "the restitution is e=0.5". Should i have been told some kind of equation to allow me to work this out or am i missing something?

James

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