Question

a body is moving in a circular path of radius r, what is the distance and displacement covered by the body for 1/2 of a circle.​

Answer 1

Answer:

When particle moves along half circle, it covers half the circumstance.

Therefore, distance covered is (2×π×r)/2 = π×r. Where r is radius of circle.

It is diametrically opposite to the starting point of its motion.

Therefore shortest distance is equal to diameter of circle or 2× r is a displacement.