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Homework Help: Energy and Momentum

  1. Jan 17, 2007 #1
    1. The problem statement, all variables and given/known data
    just a very basic question...how is energy related to momentum

    2. Relevant equations

    3. The attempt at a solution
    im not sure but i think the answer is that they both have something to do with work..can someone help clarify..thanks
  2. jcsd
  3. Jan 17, 2007 #2
    umm hello..anyone?
  4. Jan 17, 2007 #3
    does like nobody no the answer?
  5. Jan 17, 2007 #4
    What is the formula for momentum, and what is the formula for kinetic energy?
  6. Jan 19, 2007 #5

    Momentum = mv (mass x velocity)

    Potential energy = mg∆h (mass x acceleration due to gravity x ∆ height)
    Kinetic energy = 1/2 mv^2 ( 1/2 x mass x velocity squared)

    work done = force x distance travelled in the direction of the force

    since work done is energy

    it follows that energy = force x distance

    maybe you can derive a relationship from the information above

    hope that helped
  7. Jan 19, 2007 #6

    I am adding on that you may want to consider the Impulse-Momentum Theorum (it should make it easier to deal with force)
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