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Spacetime question

  1. Sep 13, 2011 #1
    1. The problem statement, all variables and given/known data
    attachment.php?attachmentid=38808&stc=1&d=1315916317.jpg


    2. Relevant equations



    3. The attempt at a solution
    attachment.php?attachmentid=38809&stc=1&d=1315916317.jpg
     

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  2. jcsd
  3. Sep 13, 2011 #2
  4. Sep 13, 2011 #3
    I am sorry, I don't understand what is the relationship between twin paradox and my question.
     
  5. Sep 13, 2011 #4

    vela

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    Incoming and outgoing just tells you what direction the stations are moving. It just means that they're at rest relative to James.
     
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