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Kinematics in 1D

  1. Oct 23, 2012 #1
    1. The problem statement, all variables and given/known data

    5. An object is thrown vertically upwards with a speed of 72 kilometres per hour. How long does it take to reach a point 25 meters below the starting point? You can take g as 10 ms-2 for convenience.

    Here is my answer. I got 4 yet the answer is 5.

    http://i.imgur.com/Ewvwh.jpg

    http://i.imgur.com/ynVmM.jpg

    http://i.imgur.com/OBVsX.jpg

    Am I correct?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited by a moderator: Oct 23, 2012
  2. jcsd
  3. Oct 23, 2012 #2

    SammyS

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    Please reduce the size of your images.
     
  4. Oct 23, 2012 #3
    Ah, Nevermind error found
     
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