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Homework Help: From force to rest

  1. Jan 31, 2009 #1
    1. The problem statement, all variables and given/known data
    here's the problem
    A 68.5 kg skater moving initially at 2.40 m/s on rough horizontal ice comes to rest uniformly in 3.52 s due to friction from the ice.

    2. Relevant equations
    F= ma

    3. The attempt at a solution
    I'm sure this equation is reliant on finding the acceleration, but I really don't know how to do that when time (instead of distance) is our given variable
    anyone know what I'm missing?
  2. jcsd
  3. Jan 31, 2009 #2
    okay sorry scratch that I just had a brain fart or something -.-
    obviously a= m/s2 so there for all I had to do was divide the velocity by the time
    I swear to god I'm getting stupider sometimes
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