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Homework Help: Work and energy theorem question

  1. Apr 29, 2013 #1
    1. The problem statement, all variables and given/known data
    a 73kg skier coasts up a hill inclined at 9.3 degrees to the horizontal. friction is negligible. Use the work and energy theorem to determine how far along the hill the skier slides before stopping, if the initial speed at the bottom is 4.2m/s

    2. Relevant equations

    w=ek ( i think)

    3. The attempt at a solution

    really dont understand this question (missed the first 2 days of a new unit and am pretty lost :/)
  2. jcsd
  3. Apr 30, 2013 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    No worries - have you tried looking up "Work-Energy Theorem" online?

    It's basically a conservation of energy problem, with a shortcut using W=ΔE and W=Fd.
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