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Electron accleration

  1. Jan 21, 2007 #1
    In an electric tube, an electron of mass 9.1*10 to the power of negative 31 kg experiences a net force of magnitude of 8.0*10 to the power of 15 over a distance of 2.0cm.

    A)calculate the magnitude of the electron's acccleration
    B)assuming it started from rest, how fast would the electron be moving at the end of 2.0cm motion.

    2. Relevant equations

    3. The attempt at a solution
    m=9.1*10 to the power of negative 31
    =8.0*10 to the power of 15/.1*10 to the power of negative 31 kg

    I didnt get how to question B)
  2. jcsd
  3. Jan 22, 2007 #2


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    Homework Helper

    Look here


    to find the 1-D kinematics equation that relates the change in velocity to a known acceleration over a known distance.

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