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Homework Help: Force Graph Problem

  1. Oct 7, 2008 #1
    Here is the diagram.
    337713766.jpg

    A 4 kg object is moving with a speed of 2.10 m/s in the x direction when it passes the origin, as shown in the figure below. It is acted on by a single force Fx that varies with x.
    (a) What is the work done by the force from x = 0 to x = 2 m?

    b) What is the kinetic energy of the object at x = 2 m?

    (c) What is the speed of the object at x = 2 m?
    m/s

    (d) What is the work done on the object from x = 0 to x = 4 m?

    (e) What is the speed of the object at x = 4 m?

    I know I have to integrate to get the work done.
    It is the integral from point x1 to point x2 of Fx Dx
    My question is, what do I integrate?

    Can someone help me get started? Thanks.
     
  2. jcsd
  3. Oct 7, 2008 #2
    Anyone help me get started?
     
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