Question

A body is travelling in a circular path of radius “r”. (3m) a. What is the distance travelled and displacement for half circle?, What is the distance travelled and displacement for full circle?​

Answer 1

Answer:

Case1: 3π,3π

Case2: 6π,0

Explanation:

Case 1: Half Circle

Total Movement= Circumference of the circle/2= 2πr/2

=πr= 3π m

Therefore,

Distance=Displacement(as the body shown no retardations)

=3π m

Case 2: Full Circle

Total Movement= Circumference of the circle= 2πr

=2πr= 6π m

Therefore,

Distance≠Displacement(as initial position=final position)

so,

Distance= 6π m

Displacement=0.