A 0.20kg billiard ball traveling at a speed of 15m/s strikes the side rail of a pool table at an angle of 60 degrees. (a) If the ball rebounds at the same speed and angle, what is its change in momentum? (b) Suppose the billiard ball approaches the rail at a speed of 15m/s and an angle of 60 degrees, but rebounds at a speed of 10m/s and an angle of 50 degrees. What is the change in momentum in this case?
If the ball rebounds at the same speed and angle, what is its change
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