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!

Newt's 2nd Law-Non-Equilibrium

  1. Dec 2, 2008 #1
    Newt's 2nd Law--Non-Equilibrium

    1. The problem statement, all variables and given/known data
    A student is skateboarding down a ramp that is 6.0m long and inclined at 18 degrees with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 2.6 m/s. Neglect friction and find the speed at the bottom of the ramp.

    [tex]\Delta[/tex]X = 6 meters
    [tex]\theta[/tex]= 18 degrees
    v[tex]_{}o[/tex]= 2.6 m/s
    v[tex]_{}f[/tex]= ?

    2. Relevant equations
    v[tex]_{}f[/tex]2= v[tex]_{}o[/tex]2 + 2ax

    3. The attempt at a solution
    v(f)2= 6.76+ 12a

    I have no idea what I'm doing. Could I get a push in the right direction? Thanks.
  2. jcsd
  3. Dec 2, 2008 #2


    User Avatar
    Gold Member

    Re: Newt's 2nd Law--Non-Equilibrium

    For this problem I'd use the conservation of energy law. You just have to find the height of the ramp and you can write down the equation.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?