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How to measure

  1. Jul 23, 2010 #1
    hello people can anyone help me...?
    here is my objective...

    To measure how long a person stays on the air, when it jumps, until it reaches the ground at the same position.

    Weight of the person
    Force exerted

    Height of the jump

  2. jcsd
  3. Jul 23, 2010 #2


    User Avatar

    Staff: Mentor

    Welcome to PF.

    You said "measure", but then you listed some data as if you really want to calculate. If you want to measure, use a stopwatch. If you want to calculate, use f=ma and its derivatives.
  4. Jul 24, 2010 #3
    sorry my fault...

    it's calculate uuhm... please i want to now more about that formula... can you please discuss to me, further, about that formula...

    please... please...:smile:
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