Question

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

Answer 1

Answer:

Answer. Displacement = Distance between initial and final position. When he travels exact half of the circle then the distance between initial and final position is nothing but diameter of circle. Hence his displacement is 40 m.

Explanation:

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Answer 2

Given:

A man runs around exact half the circumference of a circular park of diameter 40 m.

To find:

Displacement of man?

Calculation:

• Displacement is defined as a vector quantity characterized by the shortest length between the starting and stopping point of an object.

Now, when the man runs around the circular trajectory to complete half the circumference, the shortest line between the starting and the stopping point is the DIAMETER.

$\therefore \: displacement = 2r = d = 40 \: m$

So, displacement becomes 40 metres.