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Author Question: A very elastic rubber ball is dropped from a certain height and hits the floor with a downward speed ... (Read 77 times)

daltonest1984

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on: Jul 29, 2018
A very elastic rubber ball is dropped from a certain height and hits the floor with a downward speed v. Since it is so elastic, the ball bounces back with the same speed v going upward.
 
  Which of the following statements about the bounce are correct? (There could be more than one correct choice.) A) The ball had the same momentum just before and just after the bounce.
  B) The magnitude of the ball's momentum was the same just before and just after the bounce.
  C) The ball's momentum was conserved during the bounce.
  D) None of the above statements are correct.

Question 2

If you run a complete loop around an outdoor track of length 400 m in 100 s, find your (a) average velocity and (b) average speed.
 
  What will be an ideal response?
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pangili4

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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daltonest1984

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

Kedrick2014

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Reply 3 on: Yesterday
Wow, this really help

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