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Homework Help: Question about forces

  1. Oct 5, 2009 #1
    1. The problem statement, all variables and given/known data

    A single force F of 4.7 N acts in the x direction on a 7.1 kg object.

    (a) If the object starts from rest at x = 0 at time t = 0, write an expression for the power delivered by this force as a function of time. (Use F for the force F, m for mass m of the object, and t for time t as necessary.)

    Quite simply, I don't even know where to begin. Can anyone give me a nudge? I have a list of equations involving force, work, and power, but I don't know which of those to use...
  2. jcsd
  3. Oct 5, 2009 #2


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    Science Advisor
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    Gold Member

    Since you are asked to find power, what equation(s) do you know that involve force and power? Start from there.
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