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Homework Help: Impulse and Momentum

  1. Jan 29, 2012 #1
    1. The problem statement, all variables and given/known data

    http://courses.washington.edu/mengr230/sp11/handout/n25_ImpulseMomentum.pdf [Broken]
    the problem at the bottom

    2. Relevant equations

    on the link

    3. The attempt at a solution

    I wrote out the equation and I don't really know where the friction factors in. I'm pretty much 100% lost on this. I've done a good amount of impulse and momentum problems but this one is stumping me.
    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Jan 29, 2012 #2

    The Uk is for kinetic friction and the Us is for static friction. Static friction is when it's not moving and kinetic friction is when it is moving.
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