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How to find velocity given coefficient of friction, distance, mass and v1?

  1. May 13, 2009 #1
    1. The problem statement, all variables and given/known data

    calculate the final velocity of an object sliding across a surface with a coefficient of friction of 0.2, a distance of 3m, an initial velocity of 50m/s and the object's mass of 100kg.
    μ=0.2
    v1= 50m/s
    d=3m
    m=100kg
    v2= ?

    2. Relevant equations
    I know
    F= μ*normal force (mg)
    Kinetic Energy= 1/2mv^2

    3. The attempt at a solution
    I am confused and cant see how to get to the answer. Sorry, its been long since I took physics, I will really appreciate some help. Just the process of getting there. THANK YOU :)
     
  2. jcsd
  3. May 13, 2009 #2

    diazona

    User Avatar
    Homework Helper

    Here are a couple more equations for you:

    [tex]W = Fd[/tex]

    [tex]W = \Delta K[/tex]
    (K is kinetic energy)

    Does that help?
     
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