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Homework Help: Energy Problem (Systems and Energy Conversion)

  1. Oct 29, 2011 #1
    1. The problem statement, all variables and given/known data
    At what height should a parachute be opened so the final speed is 5.00 m/s. (The parachuter is 80.0 kg. He jumps off a balloon at 1,000 m. The total retarding force on the man is constant at 50.0 N with the parachute closed and constant at 3,600 N with the parachute open.)


    2. Relevant equations
    Kinetic Energy --- KE=1/2mv2
    Potential Energy --- PE=mgy ... g=9.8 m/s2
    Work --- W=Fd


    3. The attempt at a solution
     
  2. jcsd
  3. Oct 30, 2011 #2

    ehild

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    Homework Helper

    Show your attempt of solution.


    ehild
     
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