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Friction coefficient

  1. Oct 13, 2008 #1
    1. The problem statement, all variables and given/known data

    You are driving a 2410.0-kg car at a constant speed of 11.0 m/s along an icy, but straight and level road. While approaching a traffic light, it turns red. You slam on the brakes, Your wheels lock, the tires begin skidding, and the car slides to a halt in a distance of 29.0 m. What is the coefficient of sliding friction (µ) between your tires and the icy roadbed?

    m=2410kg
    vi=11m/s
    vf=0m/s
    d=29meter
    2. Relevant equations

    µ=F/N?

    3. The attempt at a solution
    i first did 2410kg * 9.8 =23618N so that would be the force normal, from there I dnt know how to get the force of friction
     
  2. jcsd
  3. Oct 14, 2008 #2

    alphysicist

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    Homework Helper

    Hi halo9909,

    They give you the initial and final velocity, and the displacement. What kinematic quantity can you find using those values that would be helpful in finding a force?
     
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