A 1000-kg car is driving toward the north along a straight horizontal road at a speed of 20.0 m/s. The driver applies the brakes and the car comes to a rest uniformly in a distance of 180 m. What are the magnitude and direction of the net force applied to the car to bring it to rest?
9.00 x 10^3 N south
1.11 x 10^3 N south
1.11 N north
1.11 N south
111 N south