Car's coefficent of kinetic friction help

  • Thread starter pharaoh
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  • #1
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you are driving a 1500 kg car at a constant speed of 20 m/s along Grand Blvd. a wet road, asphalt level road. as you approach the intersection, you get a call on your cell phone. then you forgot about the stop sign. when you see the stop sign you slam on the brakes 20 meter from the intersection. the car's wheel lock, the tire begin skidding and the car slides to a halt. what was your coefficent of kinetic friction (uk) and how far did you ge before stopping?

i got uk= 1.2 and d= 60 m but i am not sure
 

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  • #2
OlderDan
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pharaoh said:
i got uk= 1.2 and d= 60 m but i am not sure
Those two numbers are not consisteent with one another. Where did you get uk? Did you look it up in a table?
 
  • #3
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thanks for replying but i found the answer
uk= 0.53 and the d= 38.2
 

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