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Free fall HELP!

  1. Oct 2, 2007 #1
    1. The problem statement, all variables and given/known data
    A kangaroo jumps to a vertical height of 2.3 m. How long was it in the air before returning to Earth?

    2. Relevant equations


    3. The attempt at a solution

    i got .68 which i think is rite but i dont know what do you get?
  2. jcsd
  3. Oct 2, 2007 #2


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    Science Advisor

    I would much prefer to see HOW you arrived at that answer. Under "relevant equations" you have "kinematics" which NOT an equation! What equations did you use?
  4. Oct 2, 2007 #3
    the four kinematic equations

    http://www.glenbrook.k12.il.us/gbssci/Phys/Class/1DKin/U1L6a1.gif [Broken]

    i used all of them and still derived at .68
    Last edited by a moderator: May 3, 2017
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