Collisions question? (involving momentum)

[driftk]

I've been trying solve this problem for a long time but can't figure it out.

A 3.45 g ball is moving toward a stationary 5.82 g ball with a velocity of 45 m/s. The first ball bounces off at an angle of 36 degrees from its original path with a velocity of 28 m/s. What is the magnitude and direction of the velocity of the second ball after the collision? Is the collision elastic?

Thank you.

 

[The Bob]

What have you worked out so far? Let's see some workings out.

The Bob