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Homework Help: Batter hits a ball momentum problem

  1. Apr 21, 2009 #1
    A batter hits a ball with a force of F(t)=(13000N)sin(1.05ms^-1) for 3.00ms. A baseball is thrown so it has a velocity of 35.0m/s toward the batter just before it hits the bat. Assuming the baseball has a mass of 300.0g calculate:

    a. the impulse delivered to the ball over the 3.00ms

    b.the velocity of the baseball just after it leaves the bat

    I really don't know where to start. The answers are impulse=24.8N and 47.5m/s

    Any help would be great!
  2. jcsd
  3. Apr 21, 2009 #2
    Re: Momentum

    I'd start with the equations, and identifying what type of collision it is. Would you call this collision elastic, inelastic, or perfectly inelastic?
  4. Apr 21, 2009 #3
    Re: Momentum

    i would say its elastic, what equations are you talking about?
  5. Apr 21, 2009 #4
    Re: Momentum

    i don't understand. sin is a function for angles, how can you deduce "sin 1.05ms-1"

    impulse is basically change in momentum. so the unit is kg ms-1 not N
  6. Apr 21, 2009 #5
    Re: Momentum


    impulse=F*change in time
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