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Understanding momentum help

  1. Oct 22, 2006 #1
    A 75kg javelin thrower applies a 300 N force to a 2.0kg javelin for 1.5 seconds.

    a)what is the increase in momentum of the javelin?

    b)what is the speed of the javelin immediately after the throw?

    all i know is that ft = /\(mv) /\ is suppose to be a triangle.
  2. jcsd
  3. Oct 22, 2006 #2


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    Look up the relation between change in momentum and impulse.
  4. Oct 22, 2006 #3


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    Hint: the initial momentum is zero
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