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Homework Help: Linear momentum II

  1. Jan 15, 2007 #1
    1. The problem statement, all variables and given/known data

    A child throws, at 10 m/s, a 3.4 KG package, horizontally, from a boat. The boat weighs 60 kg and the child weights 20 kg. If the boat was initially at rest, what was it's speed, after the throw?

    2. Relevant equations


    3. The attempt at a solution

    I am not sure, do you have to add in the boat and child weight together so it is

  2. jcsd
  3. Jan 15, 2007 #2


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    Staff Emeritus
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    That's correct.
  4. Jan 15, 2007 #3
    yay! thank you! this is the first time all year i know what i am doing
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