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Homework Help: Relativity Question

  1. Jan 20, 2010 #1
    A man sees a rocket travelling towards him at (3/4)1/2c. Compared to its length when stationary, its length appears to be:
    a)1/4
    b)1/2
    c)3/4
    d)the same


    I'v tried thinking about it with Lorentz Contraction, but cant seem to get an answer.
     
  2. jcsd
  3. Jan 20, 2010 #2

    tiny-tim

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    Hi TheTourist! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
     
  4. Jan 21, 2010 #3
    I think I may have it now....
    I used the formula to find gamma factor 1/(1-v^2/C^2)^1/2
    and got a gamma factor of two, and assuming that the original length is 1, the observed length is 1/2. (Using Lorentz contraction)
     
  5. Jan 21, 2010 #4

    tiny-tim

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    Yup! :biggrin:
     
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