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Homework Help: Bouncing Ball KE and momentum?

  1. May 10, 2008 #1
    Bouncing Ball KE and momentum??

    Does anyone know how to calculate the KE and momentum of a bouncing ball?

    My quadratic equation is -4.113^t2+19.7t-22.72

    The bounce begins at t=1.90s
    the bounce ends at t=2.85s
    The maximum height from my graph is (i think).8m.

    For this exp I don't need the mass as I am trying to derive the following KE/m and p/m both before and after impact.
    I am so confused;
    do I plug in the start time of the bounce into the quadratic equation? then what? i nkow PE is related to this somehow, so should I be using gh to find KE/m?
    can someone please help?
  2. jcsd
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