1. A car starts from rest and accelerates at a rate of 2.5 m/s2 for 8 seconds. The car then coasts at constant velocity for 5 seconds, after which the car slows to a stop. The total distance traveled by the car, from the moment it started from rest to the moment it stopped, is 500 meters.

a. What was the total time the car was in motion? b. What was the deceleration of the car over the final portion of the trip? c. What was the average speed for the entire trip?