Question

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

Answer 1

Answer:

40 cm (from A to B)

Explanation:

As per the provided information in the given question, we have :

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

We are asked to calculate the displacement of the man.

Let us suppose the body starts from point A , which is its initial position. Then, after running around exact half the circumference of a circular park, it'll come to point B.

Displacement of the man will be the shortest distance from its initial to final position. The shortest distance from its initial to final position will be the straight line. Thus, joining the the initial and final position by a straight line, we'll get the diameter of the circle. So, the diameter of the circle is the displacement of the man.

$\longmapsto \bf{Displacement = 40 \; cm }$

Since, the diameter of the circular track is 40 cm.

∴ Displacement of the man is 40 cm.

$\rule{200}2$

More Information :

• Displacement is the shortest distance from its initial to final position of the body.
• The shortest distance from its initial to final position of the body is always a straight line.
• It is a vector quantity.
• Its SI unit is m.
• It is denoted by s.
• Displacement = Time × Velocity