Acar is traveling on a freeway onramp at 25 mph. the pavement's coefficient of road adhesion is 0.80. the car has cd 0.40, a,-20.5 ft, and w 2200 lb. the wheelbase is 130 inches, and the center of gravity is 20 inches above the roadway surface and 50 inches behind the front axle. the air density is 0.002045 slugs/ft3. the car's engine is producing 80 ft- lb of torque and is in a gear that gives an overall gear reduction ratio of 3 to 1, the wheel radius is 14 inches, and the mechanical efficiency of the drivetrain is 80%. if the speed limit on the freeway is 70 mph, calculate the required length of the acceleration lane.