1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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
    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


    User Avatar
    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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook