Acar is travelling on an cement road with a drag factor of 1.1. the speed limit on this portion of the road is 45 mph. it was determined that the brakes were operating at 85% efficiency. the driver notices that the draw bridge is up ahead and traffic is stopped. the driver immediatley applies the brakes and the tires leave four distinct skid marks each 50 feet in length. a) what is the minimum speed the car was traveling when it entered the skid? round your answer to the nearest tenth. b) did the driver exceed the speed limit when entering the skid?