Question

Consider the motion of the tip of the minute hand of a clock. In one hour
(a) the displacement is zero
(b) the distance covered is zero
(c) the average speed is zero
(d) the average velocity is zero

Answer 1

(a) the displacement is zero
(d) the average velocity is zero

Displacement is zero because the initial and final positions are the same.
Average velocity = \[\frac{\text{ Displacement } }{\text{ Total time} } = 0\]

Distance covered = \[2\pi r\] ≠ 0

Average speed = \[\frac{\text { Distance travelled} }{\text{ Total time taken} } \neq 0\]