To solve this question, we have to find the acceleration of the car first. Acceleration refers to the rate of change of velocity of an object with respect to time. Acceleration [A] = [V0 - V1] / T Where VO = Initial velocity and V1 = Final velocity T represent time. V0 = O V1 = 18 T = 8 A = [ 0 - 18] / 8 = - 2.25 A = - 2.25 M/S^2. To find force, we are going to use the formula: F = MA F = ? M = 1550 A = - 2.25 F = 1550 * - 2.25 = 3487.5 Therefore, F = -3487.5 N