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2 objects travailing in opposite directions?

  1. Oct 8, 2011 #1
    I'm sorry this could be obvious but i thought I'de ask

    ok if 2 objects travailing at 1/2 of the speed of light are traveling away from each other would you be at the speed of light or no
  2. jcsd
  3. Oct 8, 2011 #2


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  4. Oct 8, 2011 #3


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    Well, there are two concepts here. If observer A sees B and C moving in opposite directions at .9c, then A sees their separation growing by 1.8c. On the other hand, B and C each see the other moving away at .9945 c.
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