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Homework Help: Rearranging formulas again

  1. Aug 28, 2008 #1
    1. The problem statement, all variables and given/known data

    rearrange the formula d=Vft-1/2at^2 to solve for a

    2. Relevant equations

    d = Vft-1/2at^2
    d+ 1/2at^2 = Vft
    1/2at^2 = Vft-d
    1/2a = Vft-d / t^2

    then does a = 2 (Vft-d / t^2)


    3. The attempt at a solution
     
  2. jcsd
  3. Aug 28, 2008 #2
    That is correct.
     
  4. Aug 28, 2008 #3
    excellent thank you
     
  5. Aug 28, 2008 #4

    tiny-tim

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    Science Advisor
    Homework Helper

    Hi annjolino! :smile:

    What I expect you meant is right …

    but what you've written is wrong …

    should be a = 2 (Vft-d) / t^2 …

    you'll lose marks in the exam if you get brackets in the wrong place! :wink:

    (and you could have missed out the line d+ 1/2at^2 = Vft)
     
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