Question

A girl moves on a semicircular track AB of radius 20m. What is the distance moved by the girl? What is her net displacement?

Answer 1

$\bold{answer : }$

displacement =2r

Answer 2

the distance that she covers = 2πr/2

=[ 2×(22/7)×20]÷2

=440/7

and the displacement that she covers= 0

(because she came to its initial position)

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