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Homework Help: Accelerating particles

  1. Apr 3, 2009 #1
    1. The problem statement, all variables and given/known data

    How much work must be done on a particle with a mass (m) to accelerate from rest to 0.897c (speed)?

    2. Relevant equations


    3. The attempt at a solution

    Use work energy theorem.

    since K1 =0


    K2=E2-E1 (E1=0 since it was at rest)

    E2= [1/sqrt(1-0.897^2)]*m(0.897c)^2

    but apparently this is wrong o_O so I donno what I did wrong??

  2. jcsd
  3. Apr 3, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi zmike! :smile:
    erm :redface: … K1 isn't zero. :wink:
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