# Homework Help: Collisions problem?

1. Aug 11, 2010

### coffeem

1. The problem statement, all variables and given/known data

[PLAIN]http://img834.imageshack.us/img834/8045/questuinfunny.jpg [Broken]

3. The attempt at a solution

[PLAIN]http://img824.imageshack.us/img824/3619/funnyquestion.jpg [Broken]

Last edited by a moderator: May 4, 2017
2. Aug 11, 2010

### 6Stang7

Tell me why you think you can assume that each piece gets the same amount of energy?

3. Aug 11, 2010

### coffeem

Im not going to lie. I guessed. Wish to give me a better idea of how to tackle this?

4. Aug 11, 2010

### 6Stang7

What is the definition of an elastic collision?

5. Aug 12, 2010

### coffeem

Ah...

so what I have done is conserves ALL of the kinetic energy!! This lets me set up some simultaneous equestions with the momentum and all the kinetic energy conserved.

This gives me: v1 = 254.4m/s

and v2 =46.2 m/s.

does this seem correct (i havnt got the answer!) i can post all the workings if that helps.

6. Aug 12, 2010

### 6Stang7

Go ahead and post the work.