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How can inelastic collision actually have conserved momentum.

  1. Jan 9, 2013 #1
    When heat and acoustic energy are radiated from the system, doesn't this mean that the mass must have decreased as we know E = mc^2? I must be wrong, but I can't see where.
  2. jcsd
  3. Jan 9, 2013 #2


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    Science Advisor

    Radiation has momentum too.
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