Answer:
(i) When
an object completes half the circle, the distance travelled by an object
\[=\frac{1}{2}\times
\] circumference of a circle
\[=\frac{1}{2}\times
2\pi r=\pi r\]
Displacement
of an object = 2r
(ii)
When an object completes full circle, then
Distance
travelled by an object \[=2\pi r\]
Displacement
travelled by an object = 0
[\[\because
\] initial and final position are same]
(iii)
Direction of motion of an object changes continuously in the circle, hence its
velocity changes and its motion is accelerated motion.
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