Question

Q2. An object is moving in a circle of radius ‘r’. Calculate the distance and displacement (i) When it completes half circle. (ii) When it completes one fourth of the circle.

Answer 1

Explanation:

(I) Circumference=2πr

Distance of full circle=2πr

Distance of half circle=2πr/2

=πr

Displacement=diameter of the circle

=2r

(ii) Circumference=2πr

Distance of full circle=2πr

Distance of half circle=2πr/2

=πr

Distance of one-fourth circle= πr/2

Displacement of one-fourth circle=r√2