Question

A body covers half a circle of radius 1 m What is the ratio of distance
to displacement of the body​

Answer 1

Answer:

Lets consider a semi-circle with a diameter AB and radius of length “r”. When a body moves in semi-circular path from A to B then the entire curve path which it actually travels is said to be distance. While the direct path from A to B which the body virtually appers to travel is said to be the displacement. From this its clear that :

Distance (d) = perimeter of semi-circle

= pi×r

And;

Displacement (s) = length of diameter

= 2r

Now, coming to the final part, the ratio of distance to displacement is,

d/s=(pi×r)/2r

= pi/2