The driver of a car slams on the brakes, causing the car to slow down at a rate of 24.0ft/s2 as the car skids 272ft to a stop

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)