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Homework Help: You travel to another galaxyRelativity

  1. Oct 8, 2008 #1
    1. The problem statement, all variables and given/known data

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

    You wish to travel to another galaxy, which is 1,000,000 light years away. You'd like to be still alive when you get there. How fast must you travel? Given enough fuel, can you do this?

    2. Relevant equations


    3. The attempt at a solution
    using the first equation solve for gamma so you can plug it into gamma = a/(square root)1-u^2/c^2 and solve for u the speed. then use the velocity addition equation, start out with .1c +.1c to get v sub 2 and on and on until you reach gamma. i know gamma is important, but i guess my only question is what does it mean?
  2. jcsd
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