Question

A person travells 6km in circular park and reach back on the starting point calculate the displacement..

Answer 1

Displacement is 0 cuz starting and ending points are same as after moving in the circular path, he returned to same point.
and displacement is Final Position- Initial position.
Which here are same.
So displacement is 0
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Answer 2

Displacement is 0 because the person came back to its position after completing the rotation of a circle .