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Homework Help: Kinematics problem with constant acceleration

  1. May 16, 2012 #1
    A ball is thrown downwards from a top of a 20m building with an initial velocity of 15m/s. What equation could be used to model its height???

    My answer: h (t) = -4.9t2-15t+20
  2. jcsd
  3. May 16, 2012 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Looks good to me.
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