Question

a cyclist moves in a circular track of radius 70 m. if the completes one round in 11s, calculate
(i) total length
(ii) magnitude of the displacement,
(iii) average speed,
(iv) magnitude of average velocity​

Answer 1

Answer:

I)total length=2πr=2×22/7×70=2×22×10=440m

2) displacement is zero because initial and final position is same.

3)average speed=distance÷time

average speed=440÷11=40m/s

4)magnitude of average speed is 40