In a staged skid test, a 3000-pound automobile traveling 40 mph brakes to a stop in...

   

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In a staged skid test, a 3000-pound automobile traveling 40 mph brakes to a stop in 70 feet on a level surface (with all tires braking). The C.G. (center of gravity) of the test vehicle is 3.2 feet above the pavement and 5.5 feet to the rear of the front axle. The vehicle's wheelbase is 10 feet. a) What would the braking distance of the test vehicle be if only the front wheels were braking, assuming the same initial speed and surface conditions? b) What would the braking distance of the test vehicle be if only the rear wheels were braking, assuming the same initial speed and surface conditions? (Assume that the rolling resistance for unbraked wheels is 0.02.) In a staged skid test, a 3000-pound automobile traveling 40 mph brakes to a stop in 70 feet on a level surface (with all tires braking). The C.G. (center of gravity) of the test vehicle is 3.2 feet above the pavement and 5.5 feet to the rear of the front axle. The vehicle's wheelbase is 10 feet. a) What would the braking distance of the test vehicle be if only the front wheels were braking, assuming the same initial speed and surface conditions? b) What would the braking distance of the test vehicle be if only the rear wheels were braking, assuming the same initial speed and surface conditions? (Assume that the rolling resistance for unbraked wheels is 0.02.)