Question

a train goes forward at a speed of 1m/s for 20 sec then it stops and goes backward at a speed of 0.5m/s for 4 sec after both movements are completed how far is the train located from its starting point note we are asking for the trains final location not the total distance that it traveled answers given are a 18 m b 19 m c 20 m d 22 m

Answer 1

A.) 18 m 
lets say u star at point A (0m from the start) it then moves to point B (20m from the start (20x1=20)) then it moves to point C (2m back from B making it 18m from A (.5x4=2))