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Alex Throws a 0

Question 78

Multiple Choice

Alex throws a 0.10-kg rubber ball down onto the floor.The ball's speed just before impact is 7.5 m/s,and just after is 2.5 m/s.What is the change in the magnitude of the ball's momentum?


A) 0.5 kg⋅m/s
B) 1 kg⋅m/s
C) 0.75 kg⋅m/s
D) 0.25 kg⋅m/s
E) ​10 kg⋅m/s

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