Question

Two ice skaters (m = 50kg) are standing a distance apart from one another. One skater...

Two ice skaters (m = 50kg) are standing a distance apart from one another. One skater throws a ball (m = 5kg) at a speed of 10 m/s to the other skater.

What is the relative velocity between the skaters after the ball is caught?

a. 0.5 m/s

b. 1 m/s

c. 1.9 m/s

From before the ball is thrown to after the ball is caught, what happens to kinetic energy?

a. Increases

b. Decreases

c. Kinetic energy does not change

This is an exam question from my Physics final and I said 1.9 m/s and increases. Just wondering if I was correct?

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