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Friction physics problem.

  1. Feb 25, 2013 #1
    A car is traveling at 49.0 mi/h on a horizontal highway.

    (a) If the coefficient of static friction between road and tires on a rainy day is 0.099, what is the minimum distance in which the car will stop?

    (b) What is the stopping distance when the surface is dry and µs = 0.596?


    Thank you, oh and please don't give me only the answer, the full solution would be very much helpful.
     
  2. jcsd
  3. Feb 25, 2013 #2

    rock.freak667

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    Homework Helper

    How would you find the frictional force exerted on the car?

    If the car is traveling at 49.0 miles per hour, how much KE per kg will the car have? i.e. KE/mass ?

    Final Hint: what is the work done by the frictional force (think of the definition of work done by a force)
     
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