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Finding the avarage force

  1. May 12, 2010 #1
    1. The problem statement, all variables and given/known data

    A person mass is 2.20 times 10 raised tothe second kg...he falls and hits the ground. His average accelaration over the course of the collision is 75.0 m/s squared. Find the avarage force that the ground exerts on him during collision.

    2. Relevant equations

    F=MDeltaV

    3. The attempt at a solution
     
  2. jcsd
  3. May 12, 2010 #2

    PhanthomJay

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    That's a pretty heavy person at 220 kilos. Anyway, your relevant equation is incorrect. Try Newton's 2nd law. That will give you the net force acting on the person during the collision. The net force includes his weight down and the gound force acting up.
     
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