Three girls skating on a circular ice gr...

Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and a point Q diametrically opposite to P following different paths as shown in figure. What is the magnitude of the placement for each ? For which girl is this equal to the actual to the actual length of path skate ?

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Displacement is the smallest distance between the initial and final position of a moving body . Hence , Displacement vector for each girl =diameter =PQ
`=2xx200=400m`
For girl B, this is equal to the actual length of path skated.

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