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Homework Help: Gravitational potential energy homework

  1. Nov 18, 2007 #1
    A 65 kg diver is standing on a diving platform 10.0 m above the water. What is the gravitational potential energy of the diver with respect to the water’s surface?

    I know this one,,,
    Ep = mgh
    e= 65*10* 9.8
    = 6370 Joules
    or 6.37 kilojoules

    If the diver in question 6 falls from the diving platform, what is her speed just as she strikes the water?

    but I don't know how to calculate this one...
     
  2. jcsd
  3. Nov 18, 2007 #2

    hage567

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    Use conservation of energy. What's kinetic energy?
     
  4. Nov 18, 2007 #3
    does speed of the diver have something to do with kinetic energy?
     
  5. Nov 18, 2007 #4

    hage567

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    Yes. Perhaps you should look it up.
     
  6. Nov 18, 2007 #5
    Yep , you were right
     
  7. Nov 18, 2007 #6

    hage567

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    Can you work it out now?
     
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