Question

a man travelling on a circular track of radius 100m. Calculate distance and displacement covered by him-
i) in half round
ii) in one complete round​

Answer 1

50 distance. 100 displacement

50 distance . 0 displacement

.

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displacement means shortest distance by which the distance can be covered . But he is on the same point so displacement would be zero.

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Answer 2

displacement (s)in half round =2*r

s=200

distance in half round=π*r=314

in complete round

s=0

distance=2*π*100=628