A car in stop-and-go traffic starts at rest, moves forward 23 m in 8.0 s , then comes to rest again. The velocity-versus-time plot for this car is given in the figure(Figure 1). PART A:What distance does the car cover in the first 4.0 seconds of its motion? PART B:What distance does the car cover in the last 2.0 seconds of its motion? PART C: What is the constant speed V that characterizes the middle portion of its motion?