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Help with this problem

  1. Dec 15, 2008 #1
    1.the only force acting on a 2kg body as it moves along the x axis is given by F=(12-2x)N where x is in m. the velocity of the body at x=2m is 5.5i m/s. what is the maximum kinetic energy attained by the body?

    2. KE= mv^2

    3. My friend said the answer is 46J but im not sure how he got it
  2. jcsd
  3. Dec 15, 2008 #2
    You will need to find the maximum of |v(x)|. You know F(x) and mass. What quantity related to the velocity do you therefore know?
  4. Dec 15, 2008 #3
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