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SpecialOps0
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Homework Statement
Please help this is due tomorrow. I was made to do an experiment and here it is.
I had to designate a fixed starting point, drive at 10 mph until that point, put the car into neutral and see how far it drifted until it stopped. Then I was instructed to go the opposite way and do the same thing.
Average rolling distance: 55.125 meters
Weight of the car: 1649.7154 kg, or 1617.2109 Newtons
Radius of tires: .333 meters
Time Taken average: 34 seconds
I'm suppose to find the average negative acceleration of my car, the rolling friction during the experiment and the coefficient of rolling friction.
Homework Equations
N/A, show if you used different..
The Attempt at a Solution
My attempt is below I'm not sure how to get much more than the average negative acceleration.
10 mph = 4.5 m/s (for convenience)
Average neg accel: (0-4.5m/s)/34 seconds = -.1324 m/s^2
Frictional force: 16167.2109N * .1324 = 2190.5387N
Coefficient of rolling friction: (10^2)/(2*9.8*55.125) = .0926N
Again I'm confused on coeff of rolling friction