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Freely falling object physics

  1. Sep 14, 2008 #1
    1. The problem statement, all variables and given/known data

    A certain freely falling object requires 1.50 sec to travel the last 30 m before it hits the ground. From what height above the ground did it fall?

    2. Relevant equations

    3. The attempt at a solution
    the answer is 38.2, but I cannot figure out what formula to use to get there.
  2. jcsd
  3. Sep 14, 2008 #2


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    Homework Helper

    Re: Help!

    Welcome to PF.

    Here are some equations for relating x, v, t, a.


    Maybe you can get an idea.
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