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Homework Help: Please help me with this hw problem

  1. Mar 28, 2004 #1
    find the mass of a projectile when fired at 275m/s if it is to have the same momentum as a 145g projectile fired at 325m/s
  2. jcsd
  3. Mar 28, 2004 #2


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    What is the definition of momentum?
  4. Mar 28, 2004 #3
    i dont know it doesnt say any where
  5. Mar 28, 2004 #4
    You must not have looked very many places.

    Momentum is defined as

    p = mv

    where p is momentum, m is mass, and v is velocity.

  6. Mar 28, 2004 #5
    if any one can help ive been working on this for an hour
  7. Mar 28, 2004 #6
    How can we find the momentum of the 145g object? How could we find the momentum of the 275 m/s object? These two momentums are equal, so what do we do with things that are equal?

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