A particle is moving in a circle of radius `R`.
a. What is its displacement when it covers (i) half the circle, (ii) full circle?
b. What is its distance when it comers (i) half the the circle and (ii) full circle ?.
.

Explanation

a. Displacemect is the vector drawn from the initial position to the final position, and its magnitude is equal to the shortest distance between the initial and final positions.
i. Hence, displacemect is equal to the diameter of the circle `=2R`
ii. As initial and final positions are same, i. e., desplacement will be zero.
Distance is the length of the path travelled by the particlae. distance tramelled in case (ii) will be equal to `2pi R`.