5. A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s? for 20 s. It then proceeds at constant speed for 1100 m before slowing down at 2.2 m/s2 until it stops at the station. a. What is the distance between the stations? b. How much time does it take the train to go between the stations? 6. A simple model for a person running the 100 m dash is to assume the sprinter runs with constant acceleration until reaching top speed, then maintains that speed through the finish line. If a sprinter reaches his top speed of 11.2 m/s in 2.14 s, what will be his total time