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Conservation of momentum, change in velocity due to added mass from above

  1. Nov 7, 2011 #1
    1. The problem statement, all variables and given/known data
    A 15 kg cart is moving east at 3.0 m/s when 10 kg of newspaper is vertically dropped into the cart. Find final veocity?


    2. Relevant equations[/b
    m1v1i+m2v2i=m1v1f+m2v2f
    Kinematic eqs and trig will be necessary to find components for the 10kgnewspaper



    3. The attempt at a solution

    Using the eqs isted above
     
  2. jcsd
  3. Nov 7, 2011 #2

    PeterO

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    Homework Helper



    So what exactly is your question/difficulty. There is no evidence that you have been "Using the eqs isted above" ??
     
  4. Nov 9, 2011 #3
    I just dont know where to start. Do i just add the massafter the newspaper is added and find the velocity then?
     
  5. Nov 9, 2011 #4
    Give it a try, momentum before (the cart) = momentum after (cart + newspaper) and see what you get.
    Does it sound sensible
     
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