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Impulse question for physics

  1. Sep 21, 2009 #1
    1. The problem statement, all variables and given/known data
    A playerbounces a basketball on the ground. If the ground exerts a force F = 10N on the ball in 0.1 seconds, what is the impulse on the basketball. If the ball is simply dropped from a height of 2m, assuming the impulse to be the same as before, what is the basketball's mass?

    2. Relevant equations

    impulse= delta p = m delta v = F delta t

    3. The attempt at a solution
    For the impulse I have 10N x 0.1 seconds which = 1 N s

    For the mass of the basketball I tried m = delta p/delta v

    So delta p is the impulse 1 N x s but I dont know how to find delta v
    Last edited: Sep 21, 2009
  2. jcsd
  3. Sep 22, 2009 #2


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    Staff Emeritus
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    Homework Helper

    The ball is dropped from a height of 2 m. Can you find v just before it impacts the floor?

    It sounds like we should assume the collision is elastic, i.e. the speed of the ball leaving the floor is the same as the speed just before impact.
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