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Homework Help: Bouncing Ball

  1. Feb 18, 2010 #1
    1. The problem statement, all variables and given/known data

    a rubber ball mass of 0.08 kg bounces vertically on a concrete floor. the ball strikes the floor at 10 ms-1 and rebounds at 8 ms-1. The time in contact with the floor is 0.05 sec.
    Calculate the average net force acting on the ball during the contact with the floor.

    2. Relevant equations


    3. The attempt at a solution

    = 80N

    I get a force of 80 N but to me it seems to much to be true... Help???
  2. jcsd
  3. Feb 18, 2010 #2


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    Homework Helper

    You have to find the average force which is found by
    F= (change in momentum)/time.
  4. Feb 18, 2010 #3
    So change in momentum= 1.44 kgms-1


    that seems more plausible Thanks for the help!!!
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