A car is driving down a 23° rough incline at 55 km/h when its brakes are applied. Treating...

A car is driving down a 23° rough incline at 55 km/h when its brakes are applied. Treating the car as a particle and neglecting all forces except gravity and friction, determine the stopping distance if

(a) The tires slide and the coefficient of kinetic friction between the tires and the road is 0.7.

(b) The car is equipped with antilock brakes and the tires do not slide. Use 0.9 for the coefficient of static friction between the tires and the road.

Figure P3.21