E14. A car traveling with an initial velocity of 16 m/s accelerates at a constant rate of 2.8 m/s2 for a time of 3 seconds. (See example box 2.4.) a. What is its velocity at the end of this time? b. What distance does the car travel during this process? E15. A runner traveling with an initial velocity of 1.1 m/s accel- erates at a constant rate of 0.8 m/s2 for a time of 2 seconds. a. What is his velocity at the end of this time? b. What distance does the runner cover during this process