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Author Question: Alex throws a 0.25-kg rubber ball down onto the floor. The ball's speed just before impact is 4.5 ... (Read 205 times)

kodithompson

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on: Jul 28, 2018
Alex throws a 0.25-kg rubber ball down onto the floor. The ball's speed just before impact is 4.5 m/s, and just after is 2.9 m/s. What is the change in the magnitude of the ball's momentum?
 a. 0.39 kg/m/s
  b. 1.9 kg/m/s
  c. 1.1 kg/m/s
  d. 0.73 kg/m/s
  e. 7.4 kg/m/s

Question 2

A 0.10-kg ball is moving at 7.0 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 12.0 m/s. What is the change in the magnitude of the momentum of the ball?
 a. 0.50 kg/m/s
  b. 5.0 kg/m/s
  c. 0.70 kg/m/s
  d. 1.9 kg/m/s
  e. 1.2 kg/m/s


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Chelseyj.hasty

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

d


kodithompson

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Reply 2 on: Jul 28, 2018
Wow, this really help

daiying98

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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