A particle moves in circle of radius R = 21/22 m with constant speed 1 m/s. Find magnitude of average velocity and magnitude of average acceleration in 2s.

Dear Vishrant,

To find average velocity you need to find out the displacement.

so calculate the chord length from initial to final point ( after 2s)

u can calculate the chord length from the formula 2Rsin(c/2) where c is the angle subtended by the chord at the centre.

c=angular velocity x time

after that average acceleration is equal to average velocity by time