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Homework Help: Need help with a Kinematics problem

  1. Jan 23, 2008 #1
    1. The problem statement, all variables and given/known data
    This problem has really been bugging me, and i cant seem to figure it out. Heres the question:

    Nicole throws a ball straight up. Chad watches the ball from a window 5.90 m above the point where Nicole released it. The ball passes Chad on the way up, and it has a speed of 15.0 m/s as it passes him on the way back down.

    How fast did nicole throw the ball?

    I dont understand how the guy in the window at 4.9m meters helps me at all. Any help will be greatly apprectiated. Thanks.

    2. Relevant equations

    V final = V initial + a(delta t)

    3. The attempt at a solution
     
  2. jcsd
  3. Jan 23, 2008 #2

    mgb_phys

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