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A person runs along a circular path of radius 5 m. If he completes half of the circle, find the magnitude of the displacement vector. How far the person ran ?

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10 m, 5 $π$ m

5 $π$ m , 19m

5 $π$ m, 10 m

14 m, 10 $π$ m

answer is A.

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Detailed Solution

straight length between A to B is displacement.
Displacement = 2R = 2 × 5 = 10 m
Distance = $πR = 5 π m$

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