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Potential Energy in basketball

  1. Oct 23, 2008 #1
    1. The problem statement, all variables and given/known data

    A basketball is dropped from a height of 2m. It lost lost 20% of its energy, in the bouncing from the floor due to friction in the air, before it reaches the highest point of its first bouncing. How high did it bounce?

    h1= 2m

    2. Relevant equations

    PE = mgh and Energy Total (initial)=Energy Total (final)

    mgh1 = 0.20 + mgh2

    3. The attempt at a solution

    I dont know how to solve it without the mass and kinetic energy
  2. jcsd
  3. Oct 23, 2008 #2


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    check this equation for an error....20% of what?

    What's the initial KE at the release point? What's the final KE at the top of the first bounce?
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