Answer to Question #185679 in Classical Mechanics for varun

Question

Knowing that the coefficient of static friction between the tires and the road is 0.80 for the car as shown in figure 2. At this car, suddenly brakes are applied when it was moving with a velocity of 360 inches/sec and it skidded to rest in 240 inches. Determine the magnitude of the normal reaction and of the friction force at each wheel as the car skidded to rest. 

Answer 1

Answer

By equation of motion

$360^2=2a(240) \\a=270inch/sec^2$

Friction force =ma=270m lB

m is the mass of the car.