Skid marks on a drag race track indicate that the rear (drive) wheels of a car skid for the first 18 m and roll with slipping impending during the remaining 382 m. The front wheels of the car are just off the ground for the first 18 m, and for the remainder of the race 75 percent of the weight of the car is on the rear wheels. Knowing that the speed of the car is 58 km/h at the end of the first 18 m and that the coefficient of kinetic friction is 80 percent of the coefficient of static friction, determine the speed of the car at the end of the 400-m track. Ignore air resistance and rolling resistance.