Question

A man moves in a circular path from A to B by completing half a circle. The radius of the circle is 7 m. What is the displacement of the man?

Answer 1

Displacement is equal to the distance between initial and final position. so in this case displacement will be equal to 2r, the diameter of the circle.

&

Distance is equal to the length of actual path traversed by the object. so in this case, displacement will be equal to the half of the circumference i.e. πr.