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Homework Help: Question about relativity theory

  1. Apr 27, 2013 #1
    the total energy of a proton is 3 times it rest energy.
    -find the proton's rest energy in eV
    -what is the speed of the moving proton?
    -what is the proton's momentum?
    please help me..i dont know how to solve it
  2. jcsd
  3. Apr 27, 2013 #2


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    welcome to pf!

    hi nufa19! welcome to pf! :smile:

    start by writing the equation that relates total energy and rest energy :wink:

    (if you don't know it, look it up!)
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