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Homework Help: Change in momentum of different masses

  1. Jul 21, 2013 #1
    1. The problem statement, all variables and given/known data
    How is change in momentum related to mass? Will the change in momentum for a mass of 4m being pushed with constant force be same as the change in momentum for a mass of m being pushed with same force?


    2. Relevant equations



    3. The attempt at a solution

    I know Change of momentum (i.e Impulse) is M(v-u) which is also equal to F.time. But that would suggest change in momentum for mass of $m is more than that of m. Is that right?
     
  2. jcsd
  3. Jul 21, 2013 #2
    Momentum is mass X velocity, or change in momentul is mass X change in velocity.
    For a given impulse, F X Time, the change in momentum will be the same. If the mass is increased by 4 times, then the change in velocity will decrease by 4 times.
     
  4. Jul 21, 2013 #3
    Yup, that was my thought. Wanted to get it cleared. Thanks!
     
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