Teacher's Guide - Pearson

3.f) Object stopped and turned back on the same path.g) Average velocity 5 ​3__ ​ 5 1.5 m/s24. a) AB: Moves at constant velocity for 3 seconds, displaced 3 metres; stops at B.BC: Turns back and moves at constant velocity for 2 seconds in oppositedirection; displaced 22 metres.CD: Moves at increased velocity until 1 metre past reference point, all in1 second. Displaced 22 metres; stops at D.DE: Turns back on same path and moves at constant velocity for 2 seconds,1 metre past reference point. Displaced 2 metres.b) Stopped and turned back at B and D. Accelerated at C.c) V AB5 1 m/s in a certain directionV BC5 21 m/s in the opposite directionV CD5 22 m/s in the opposite directionV DE5 1 m/s in the original directiond) V AB5 3.6 km/h in a certain directionV BC5 23.6 km/h; opposite directionV CD5 27.2 km/h; opposite directionV DE5 3.6 km/h in the original directione) i) 1 metreii) 9 metresiii) Average speed 5 ________ distance​time ​ 5 ​ 9__ ​ 5 1.125 m/s8f) At reference point A.g) At 0 s and at 7 s.Chapter 14: Travel graphs81