Q 1. An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 minutes 20 s?
Given, Diameter of the circular track =
The circumference of the circular track,
The athlete completes one round of a circular track in 40 s.
Speed of the athlete =
Distance travelled by the athlete =
Also, number of rounds the athlete will complete in =
Therefore, the final position of the athlete after will be diametrically opposite to his initial point.
(3 complete rounds and one half round.)
Hence, displacement of the athlete = magnitude of diameter of the circle =