A boy walks due south and then due west

PHYSICS · Subjective · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

A boy walks 3 km3\,\text{km} due south and then 4 km4\,\text{km} due west. Determine (i) the magnitude of his resultant displacement, and (ii) the angle it makes with the south direction, correct to one decimal place.

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