1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    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?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook