Question

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?

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Solution

The correct option is **C**

√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

Displacement DC=√DA2+AC2

= √52+42

= √41 km South-west

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