SOLUTION: how many feet does it takes for a big red truck going 20 meters pre second to stop on an icy road

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Question 859209: how many feet does it takes for a big red truck going 20 meters pre second to stop on an icy road
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The coefficient of friction for rubber on ice is 0.15.
The friction force does work to stop the truck.
Kinetic energy equals the work done by the friction force.
F%5Bf%5D%2Ad=%281%2F2%29mv%5E2
mu%2Amg%2Ad=%281%2F2%29mv%5E2
d=v%5E2%2F%282g%2Amu%29
d=20%5E2%2F%282%289.8%29%280.15%29%29
d=136.0m