A person movers 20m towards north-East then moves 20m towards West and then again moves 20m towards north-East and stops. The magnitude of displacement of the person is

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Solution

Dear Student ,
Here in this case the person 20 m towards North East and then 20 m towards West and then again 20 m in the North East direction .Therefore the situation created a parallelogram here .
So the magnitude of displacement of the man is ,
$S = \sqrt{20^{2} + 20^{2}} = 20 \sqrt{2} m$

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