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Thread: revision help

  1. #1
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    revision help

    i didnt know where to put revision help so i guess here will do

    exam tomorrow morning so im squeezing in some last hours of revising....

    can anyone help me with this....

    make t the subject $\displaystyle s = 1/2at^2 $

    i dont know how to start it, dont want to end up with fraction of fractions
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  2. #2
    Junior Member
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    Thumbs down revising for AS C1 tomorrow then? :)

    Quote Originally Posted by RubbishAtMaths
    exam tomorrow morning so im squeezing in some last hours of revising....

    can anyone help me with this....

    make t the subject $\displaystyle s = 1/2at^2$

    i dont know how to start it, dont want to end up with fraction of fractions
    $\displaystyle s = 1/2at^2$ divide by 1/2 to get

    $\displaystyle 2s = at^2$ tthen divide by a to get

    $\displaystyle 2s/a = t^2$ then square root to get

    $\displaystyle t= \sqrt{ 2 s/a}$

    sorry im no good at usign this [tex] stuff


    $\displaystyle \sqrt{\frac{2s}{a}}=t$
    Last edited by mr fantastic; Jan 8th 2009 at 12:56 PM. Reason: Fixed the quote and latex
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  3. #3
    Junior Member shinhidora's Avatar
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    Quote Originally Posted by RubbishAtMaths View Post
    i didnt know where to put revision help so i guess here will do

    exam tomorrow morning so im squeezing in some last hours of revising....

    can anyone help me with this....

    make t the subject $\displaystyle s = 1/2at^2 $

    i dont know how to start it, dont want to end up with fraction of fractions
    $\displaystyle s = 1/2at^2 $
    $\displaystyle \frac{s}{2} = at^{2}$
    $\displaystyle \frac{s}{2}a = t^{2}$
    $\displaystyle \sqrt{\frac{s}{2}a}=t$

    I suppose
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  4. #4
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    yup! AS C1 tomorrow at 9am

    cheers y'all
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