A 0.12-kg ball is moving at 6 m's when it is hit by a bat, causing it to reverse direction and have a speed of 14 m's. What is the magnitude of the change in the momentum of the ball? a. 0.39 kg m's b. 0.42 kg-m's c. 1.3 kg-m's d. 2.4 kg m's

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Chapter8: Linear Momentum And Collisions
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Problem 1PE: (a) Calculate the momentum of a 2000-kg elephant charging a hunter at a speed of 7.50 m/s. (b)...
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1. A0.12-kg ball is moving at 6 m's when it is hit by a bat, causing it to reverse direction and
have a specd of 14 m/s. What is the magnitude of the change in the momentum of the ball?
a. 0.39 kg m's
b. 0.42 kg-m's
c. 1.3 kg-m's
d. 2.4 kg-m's
2. Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is
6.5 m/s, and just after is 3.5 m's. What is the magnitude of the change in the ball's
momentum?
a. 0.09 kg m/s
b. 1.5 kg-m/s
c. 4.3 kg-m/s
d. 126 kg m/s
Transcribed Image Text:1. A0.12-kg ball is moving at 6 m's when it is hit by a bat, causing it to reverse direction and have a specd of 14 m/s. What is the magnitude of the change in the momentum of the ball? a. 0.39 kg m's b. 0.42 kg-m's c. 1.3 kg-m's d. 2.4 kg-m's 2. Alex throws a 0.15-kg rubber ball down onto the floor. The ball's speed just before impact is 6.5 m/s, and just after is 3.5 m's. What is the magnitude of the change in the ball's momentum? a. 0.09 kg m/s b. 1.5 kg-m/s c. 4.3 kg-m/s d. 126 kg m/s
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