1. Jun 28, 2016 #1

   AyoubEd

   

   can you help me with this, please?

    

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   AyoubEd, Jun 28, 2016
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3. Jun 28, 2016 #2

   CWatters

   

   Science Advisor

   Homework Helper

   Firstly it doesn't say "one second" it says "per second" which is a rate.
   
   Momentum = mass * velocity
   so
   Momentum per second would be equal to mass * velocity / time
   
   Velocity/time = acceleration.
   
   can you do the rest?

    

   CWatters, Jun 28, 2016
4. Jun 28, 2016 #3

   NihalRi

   

   Force is the change in momentum per unit time.
   F=ma (m=mass a=acceleration)
   a= (vf-vi)/t
   Replacing a into the force equation:
   
   F=m (vf-vi)/t
   Which is change in momentum per unit time.

    

   NihalRi, Jun 28, 2016
5. Jun 28, 2016 #4

   AyoubEd

   

   thanks a lot NihalRi @CWatters :
   

    

   AyoubEd, Jun 28, 2016

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