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Homework Help: Stuck on this downhill skiier problem! help

  1. Apr 22, 2010 #1
    1. The problem statement, all variables and given/known data

    A sker reaches a speed of 56 m/s on a 30 degree ski slope. Ignoring friction, what was the minimum distance along the slope the skier would have had to travel, starting from rest?

    2. Relevant equations

    Which equation do i start with? I'm pretty sure i have to find the x-y component of the acceleration but i'm not sure i'm flat out stuck on this problem.

    3. The attempt at a solution

    If i draw a right triangle, and the opposite leg is -9.8 m/s do i use sin30 to find the acceleration down the slope?
  2. jcsd
  3. Apr 22, 2010 #2
    You can resolve it in a way that is parallel and perpendicular to the ski slope. So find acceleration and then use the formula v^2 = u^2 + 2as to solve it.
  4. Apr 22, 2010 #3
    i figured it out. it was two steps
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