1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Find Sam's speed at the bottom using work and energy

  1. Nov 16, 2007 #1
    Need help please!!!!

    1. The problem statement, all variables and given/known data

    Sam, whose mass is 75 kg, straps on his skis and starts down a 50-m-high, 20 degrees
    frictionless slope. A strong headwind exerts a horizontal force of 200 N on him as he skies.

    Find Sam's speed at the bottom using work and energy.
    Find Sam's speed at the bottom using Newton's laws.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Nov 16, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    You have to post an attempt to work it out then we will help you.
    there is no point just copying the answer form us.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?