Question

A person walked 40 metres towards North, took a left turn and walked 20 metres. He again took a left turn and walked 40 metres. How far and in which direction is he from the starting point?

Accepted Answer

D. - Starts at $(0,0)$. - 40 m North $\implies (0, 40)$. - Left turn (West) 20 m $\implies (-20, 40)$. - Left turn (South) 40 m $\implies (-20, 0)$. Distance from starting point $= 20$ metres in the West direction.

Direction and Distance Walked

Explanation

Practise this under exam conditions