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Homework Help: Relativistic particles

  1. May 11, 2009 #1
    1. The problem statement, all variables and given/known data

    A relativistic particle with mass at rest M0 and velocity v hits another particle with mass at rest M1. the collision is perfectly inelastic. How can I calculate the mass at rest of the new particles after the collision?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. May 11, 2009 #2
    Conservation of momentum and total energy.
  4. May 11, 2009 #3


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    Homework Helper

    Easiest way to do this is using 4-momentum, [itex]p_\mu=(\frac{E}{c},\vec{p})[/itex]. Note that 4-momentum is conserved and [itex]p^\mu p_\mu=-m^2 c^2[/itex] is invariant.
    Last edited: May 12, 2009
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