A boy travels 5 km to the south and turns west to travel 13 km. Finally, he travels on the same path, 9 km due east and stops. What is his displacement from the initial point?
√41 km South-west
DA denotes the 5 km that the boy travelled south. Then he turned to the west and travels 13 km which is denoted by AB.
He returns on the same path while travelling 9 km east which is his destination.
Effectively, he travelled 4 km west which is shown using AC.
Displacement is DC
= √41 km South-west