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Basic Relativity Stuff

  1. Jun 9, 2008 #1

    bfr

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    1. The problem statement, all variables and given/known data

    I'm trying to find out how to use the formula t'=t*sqrt(1-v^2 / c^2) for time dilation.

    For example, if object A were moving .8c and object B were moving .6c, would I do .8c-.6c=.2c, and substitute that in for v in the time dilation formula to find the time object B observes for object A?

    2. Relevant equations

    t'=t*sqrt(1-v^2 / c^2)
    v'=(u+v)/(1+(u*v)/c^2)
     
  2. jcsd
  3. Jun 9, 2008 #2

    Dick

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    To find the relative velocity you need to use the relativistic law for adding velocities. You don't just add or subtract the velocities. You quoted the formula. Now use it.
     
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