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Completely lost work-energy theorem

  1. Feb 2, 2009 #1
    1. The problem statement, all variables and given/known data

    How much work is needed for a 71 kg runner to accelerate from rest to 10.2 m/s?

    I have no idea how to do this so I have no equations or attmpts at this.
    Last edited: Feb 2, 2009
  2. jcsd
  3. Feb 2, 2009 #2


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    Okay, I believe you need to use the Work = Fd...

    Edit: What happened to the Well Question???
    Last edited: Feb 2, 2009
  4. Feb 2, 2009 #3


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    Homework Helper

    What change in kinetic energy has taken place?

    How did that happen?
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