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Find energy dissipated due to air friction in a thrown ball

  1. Jul 15, 2005 #1
    A 0.40 kg ball is thrown vertically upward with a speed of 30 m/s. The ball reaches a height of 40 m. Assuming g= 9.8 m/s^2, the energy dissipated due to air friction is :


    F=mgh m=0.40kg, g=10 m/s^2, h=40m, a= 30 m/s

    Not sure if I set this problem up right, and since everything is given don't know how to find energy dissipated due to friction.
     
  2. jcsd
  3. Jul 15, 2005 #2

    OlderDan

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    Can you calculate the initial energy of the ball, and the energy it has when it reaches the highest point?

    F is not mgh. mgh is potential energy.
    30 m/s is not acceleration, it is the initial velocity.
     
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