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Homework Help: Calculating Work Conceptual Question

  1. Oct 23, 2008 #1
    1. The problem statement, all variables and given/known data
    A certain amount of work Wo is required to accelerate a car from rest to a speed v. How much work is required to accelerate the car from rest to v/2?

    2. Relevant equations
    W = Fd


    3. The attempt at a solution
    I know that if we were finding the distance instead of velocity, then the answer would be
    Wo/2, but I'm not sure if the force is the same for each situation. If it is, then I assume that the answer would also be Wo/2.
     
  2. jcsd
  3. Oct 23, 2008 #2

    Doc Al

    User Avatar

    Staff: Mentor

    What makes you think the distance would be 1/2?

    What does the Work-Energy theorem tell you?
     
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