Question

The particle is moving in a circular path of radius r. The displacement after half a circle would be

Answer 1

Answer:

Displacement at half path is the shortest distance between the initial and final point.

So, it's equal to twice the radius of the circle =2r

Answer 2

Answer:

circumference of the circle = 2πr

here,

Radius= r

therefore the displacement of the particle who covered half circle is 1/2×2πr

or ( here 2 gets cancell)

πr