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The formula for the braking distance of a car is: 0.0336102 d = where: . d is the braking distance (in feet) . v is the initial velocity of the car (in miles per hour) . / is the coefficient of friction between the tires and the roadway At the scene of an accident, the driver tells a police officer he had been driving at 30 miles per hour when he slammed on his brakes and skidded off the road. If the road is covered in snow with a friction coefficient of u - 0.25, how long should the skid marks be if the driver was really going 30 miles per hour? d feet (Round to 1 decimal place.) The officer measures the skid marks and finds they are 188 feet long, which shows the driver was going faster than 30 miles per hour. Used = 188 to determine the actual speed of the car. miles per hour (Round to 1 decimal place.)