Question

1. A man runs around exact half the circumference of a circular park of diameter 40 m.
What is the displacement of the man?
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Answer 1

Explanation:

displacement = diameter

= 40m

Answer 2

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When the man travels exact half of the circle then the distance between initial and final position is nothing but diameter of circle. Hence his displacement will be 40 m.

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• s=2r.
• d=2r

$\huge{ \blue{\mathfrak{ \underline{\overline{\mid \:\: Note:- \:\: \mid}}}}}$ If a body moves along a circle of radius r and covers half the circumference, then displacement is given by s=2r.