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?
Solution
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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