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Homework Help: Electric Potential Enrgy

  1. Feb 5, 2008 #1
    1. The problem statement, all variables and given/known data
    A 1-gram particle with a charge of 1 milliC starts from rest in a uniform electric field of magnitude E = 10 V/m. How
    far (in m) does the particle travel in 2 seconds?
    I know the answere is 10 but I dont know how to find it

    2. Relevant equations

    3. The attempt at a solution
    I converted all units but I have PE and change in x left and I am stumped can anyone help

    I have PE/.oo1= -10* x

    I know the answere is 10m already but I cant figure out how
  2. jcsd
  3. Feb 5, 2008 #2


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    Science Advisor
    Homework Helper

    Don't use PE. Use force F=E*q. Then use F=ma to find the constant acceleration. Now use kinematics to find the distance travelled. I don't think the answer is 10m.
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