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Relativistic collision

  1. Apr 12, 2009 #1


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    1.To an observer two bodies of equal rest mass collide with velocities of 0.8c in different directions and cohere to produce a stationary composite body, to a second observer body A is at rest before the collision.

    a. Find the velocity of body B as measured by the second observer before the collision.

    b.What is the velocity of the composite body as measured by the second oberver?

    3. my answer to part a:
    -1.6c/1+0.64 =-0.98c

    for part b. Could somebody please show me how to do this type of question? I am really stuck on this part .
  2. jcsd
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