Question

An athelet runs one round of a circular track of diameter
100m in 30 seconds. What will be he distance and displacement
at the end of 2 mins 15 seconds​

Answer 1

Answer: displacement - 200 m

              distance  - 2200 m

Explanation:

Thus, the displacement between the initial and the final position will be the diameter of the track. Therefore displacement is 200 m and the distance covered is 2200m

Answer 2

In 30 secs he travels 100

in 2 mins 15 secs he will cover 2×100+50

100m means circumference

c=2πr

or 100=2×22/7×r

r=7/44×100

r=700/44

so displacement is equal to 700/44=15.909m