Question

A body covered a distance of x meter along a semicircular path.Calculate the magnitude of displacement of the body,and the ratio of distance to displacement?

Answer 1

displacement is the shortest path and let's take it as d, so the magnitude of displacement is d and ratio of distance to displacement is x/d

Answer 2

Let radius Be (R)
perimeter of semicircle = pie R
given that
x=pie R
R=x/pie
DISPLACEMENT=diameter=2r

2r=2x/pie
Distance:Displacement=x:2x/pie