Question 28

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

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After turning left for the second time, the person would be walking in a south direction. Walking 40 m north and then 40 meters south, the vertical displacement would be zero. 

The only net movement would be the person's 20-meter movement to his left, which is in the west direction. 

Therefore, Option D is the correct answer. 

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