A car pulls away from an intersection when the light turns green. After uniformly accelerating for the next 4.0 s, the car has travelled a distance of 50 m. The car then proceeds at constant speed. (a) What was the car's acceleration? (b) How fast was the car travelling when it finished accelerating? (c) How long will it take for the car to travel another 50 m at this constant speed? (d) Plot the corresponding position-time graph for the car over its 100-m drive. (e) Plot the corresponding speed-time graph for the car over its 100-m drive.