The speed s in miles per hour that a car is traveling when it goes into a skid can be estimated by the formula S = 5.5D(F+f), where F is the coefficient of
friction, f is the superelevation and D is the length of the skid marks in feet. After an
accident, a driver claims to have been traveling the speed limit of 55 mph. The
coefficient of friction under the accident conditions was 0.75 and the superelevation
was 0.05. How long should the skid marks actually measure if the driver was in fact
going 55 mph?
85ft
125ft
150ft
101Ft