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Paratrooper falls without parachute

  1. Oct 24, 2005 #1
    A paratrooper pilot fell 370 m after jumping without his parachute opening. He landed in a snowbank, creating a crater 1.0 m deep, but survived with only minor injuries. Assume the pilot's mass was 75 kg and his terminal velocity was 50 m/s.

    (a) Estimate the work done by the snow in bringing him to the rest.
    (b) Estimate the average force exerted on him by the snow to stop him.
    (c) Estimate the work done on him by the air resistance as he fell.

    I am totally lost on this problem...can someone help me on how to start the problem?? thanks!
     
  2. jcsd
  3. Oct 24, 2005 #2

    Chi Meson

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    Hints:

    (a) See the "work-energy theorem"
    (b) after finding that answer, how is work calculated?
    (c) What KE should he have had after falling from that height? What KE did he have?
     
  4. Oct 24, 2005 #3
    thanks chi meson...i got part A as -94485 J, but i'm having problems with part B. I'm still confused about how to find the average force exerted on him by the snow to stop him..help please!
     
    Last edited: Oct 24, 2005
  5. Oct 24, 2005 #4

    Tom Mattson

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    How is work related to force?
     
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