Question

An athlete runs on a circular track whose radius is 50 M with a constant speed it takes 50 seconds to reach point B from starting point find the distance travelled the displacement the speed

Answer 1

If the athlete completes one round then distance travelled is 2πr
distance=2*22/7*50
distance=314.28m
displacement is zero.

Answer 2

Answer :

Part A :

distance = πr = 50π = 157.14 m

Part B  

Displacement =  2r = 2 x 50 = 100 m  

Part C  

distance / time = speed = 157.14/50 = 3.14 m/s or π m/s