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Author Question: A crane drops a 0.250-kg steel ball onto a steel plate. The ball's speeds just before impact and ... (Read 175 times)

Caiter2013

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on: Jul 28, 2018
A crane drops a 0.250-kg steel ball onto a steel plate. The ball's speeds just before impact and after are 4.00 m/s and 3.70 m/s, respectively. If the ball is in contact with the plate for 0.035 s, what is the magnitude of the average force that the ball exerts on the plate during impact?
 a. 55.0 N
  b. 2.14 N
  c. 28.6 N
  d. 26.4 N
  e. 1.93 N

Question 2

Alex throws a 0.250-kg rubber ball down onto the floor. The ball's speed just before impact is 5.30 m/s, and just after is 3.71 m/s. If the ball is in contact with the floor for 0.028 s, what is the magnitude of the average force applied by the floor on the ball?
 a. 80.4 N
  b. 14.2 N
  c. 47.3 N
  d. 33.1 N
  e. 2.25 N


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raenoj

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

a

Answer to Question 2

a


Caiter2013

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Reply #2 on: Jul 28, 2018
Thanks


raenoj

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Reply #3 on: Jul 28, 2018
Welcome :)


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