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Foon

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Question:

Two balls of equal mass (m) undergo a collision. One ball is initially stationary. after the collision, the velocities of the balls make angles of 31.1 degrees and 48.9 degrees relative to the original direction of motion of the moving ball. (momentum is conserved)

b) If the initial speed of the moving ball is 2.25 m/s what are the speeds of the balls after the collision?

I'm pretty sure that we're searching for the final velocties. Again, any help would be great.

Thanks!