I am having trouble with a physics problem. The problem is as follows:
A car is traveling at 54.0 mi/h on a horizontal highway.
A) If the coefficient of static friction between road and tires on a rainy day is 0.103, what is the minimum distance in which the car will stop?
B) What is the stopping distance when the surface is dry and µs = 0.595?
This is what I have so far for A)
fs = µs * Fn Fn = Mg fs = Ma Ma = µs * Mg a = µs * g V = 54 - a * t 0 = 54 - a * t t = 53.497 seconds dist = 54*t - (a/2)*t^2 = 1444.42243 miles = 2324572.57 meters
This is not the correct answer. Any help would me much appreciated.