Question

An athlete completes ine round of a circular track of diameter 200 m in 40 s . What will be the distance civered and the displacement at the end of 2 minutes 20 s

Answer 1

2 minutes 20 seconds = 240 seconds

240 s / 40 rev/s = 6 rev

Athletes completes 6 revolutions in 240 seconds
As the athelete came to his initial position displacement covered is zero.

Distance = n × circumference of circle
= 6 × 2 π × 100 m
= 3768 m

Distance covered is 3768 m