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Homework Help: Energy Considerations

  1. Jul 9, 2008 #1
    1. The problem statement, all variables and given/known data
    A ball is thrown vertically from y=0 with velocity V0. Using only energy considerations, find the following
    a. Ymax in terms of V0.
    B. The Velocity(V1/2 at y= 1/2 Ymax (in terms of V0

    2. Relevant equations
    Ki+Ui=Kf+Uf


    3. The attempt at a solution I'm not sure how to start this off to find the ymax in terms of V0
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jul 9, 2008 #2

    Dick

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    Science Advisor
    Homework Helper

    The U in your problem is the potential energy mgy. The K is the kinetic (1/2)mv^2. At the initial time v=V0 and y=0. At the final time v=0 and y=ymax. Use your energy conservation to solve for ymax in terms of V0.
     
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