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Homework Help: Change in Momentum

  1. Nov 4, 2007 #1
    1. The problem statement, all variables and given/known data

    A 4 kg body is initially moving northward at 15 m/s. Then a force of 10 N, toward the east, acts on it for a time of 1.9 s.

    (a) At the end of that time, what is the body's final velocity? Magnitude ____ m/s
    Direction _____ ° north of east

    (b) What is the change in momentum during that time?
    19.2 5kg·m/s toward the east toward the west

    2. Relevant equations


    3. The attempt at a solution

    I got he change in momentum during the time but i dont know how to find the magnitude and direction of the force...
  2. jcsd
  3. Nov 4, 2007 #2

    Doc Al

    User Avatar

    Staff: Mentor

    You are given the force and the time. Realize that impulse is a vector quantity.
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