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Electric potential

  1. Sep 28, 2007 #1
    An alpha particle (q=+2e, m=6.64*10^-27 Kg) is emitted in a radioactive decay with KE=5.53MeV what is its speed?

    can someone help me to slove this problem......
  2. jcsd
  3. Sep 28, 2007 #2
    The rules of the forum say that you have to display some working, so that we know where to begin.

    In this case, the obvious question is: is it relativistic?
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