A 3600-lb car is traveling with a speed of 60 mi/hr as it approaches point A. Beginning...

A 3600-lb car is traveling with a speed of 60 mi/hr as it approaches point A. Beginning at A, it decelerates uniformly to a speed of 25 mi/hr as it passes point C of the horizontal and unbanked ramp. Determine the total horizontal force F exerted by the road on the car just after it passes point B.