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An old person moves on a semi circulasr ...

An old person moves on a semi circulasr track of radius 40.0 m during a moirning walk. If he starts at one end of the track and reaches at the other end, find the distance covered and the displacement of the person.

A

126 m, 80 m

B

80m, 126 m

C

80m, 252 m

D

252 m, 80 m

Text Solution

Verified by Experts

Distance covered by man = Length of the path = ` pi R = pi xx 40 = 126 `m
Displacement of the man = The least distance between initial and final points = Diameter of emicircular path = `2R = 2 xx 40 = 80` m
The direction of displacement will be from initial
point to final point.
Hence correct answer is (A).
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