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Author Question: Two players are enjoying a steady volley in a game of ping-pong, in which the motion of the ball is ... (Read 112 times)

sammy

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on: Jul 29, 2018
Two players are enjoying a steady volley in a game of ping-pong, in which the motion of the ball is repeated regularly. Is the motion of the ball simple harmonic motion?
 
  What will be an ideal response?

Question 2

A 3.00-kg object traveling 20.0 m/s west collides with a 5.00-kg mass object traveling 12.0 m/s west. The collision is perfectly elastic, what is the velocity of the 3.00-kg object after the collision?
 
  A)
 
  20.0 m/s east
  B)
 
  8.00 m/s west
  C)
 
  12.0 m/s west
  D)
 
  12.0 m/s east
  E)
 
  10.0 m/s west


tdewitt

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Reply #1 on: Jul 29, 2018
Answer to Question 1

No. The motion is periodic, but the forces that make the ball go back and forth are not related linearly to the distance from the average location of the ball.

Answer to Question 2

E


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