- #1

lu22

- 8

- 0

## Homework Statement

There are 3 blocks, A B and C, arranged left to right. blocks A and C have masses of m and block B has mass of 2m. block A heads toward the other two with velocity v. determine the final velocity of each block after all subsequent collisions. assume all collisions are elastic.

## Homework Equations

conservation of momentum for elastic collisions -- m

_{1}v

_{i}+ m

_{2}v

_{i}= m

_{1}v

_{1f}+ m

_{2}v

_{2f}

conservation of energy for elastic collisions -- 1/2m

_{1}v

_{1i}

^{2}+ 1/2m

_{2}v

_{2i}

^{2}= 1/2m

_{1}v

_{1f}

^{2}+

1/2m

_{2}v

_{1f}

^{2}

## The Attempt at a Solution

I tried this a couple different ways but its confusing without numbers

I also don't know if I should use just momentum or just energy or a combination of both

thanks for the help!