Question

an athlete completes one round of a circular track of diameter 14 metres in 40 seconds.what will be the distance and displacement at the end of 2 minutes 20 seconds​

Answer 1

Answer:

In 40 sec the athlete complete one round. So, in 2 mins and 20 secs, that is, 140 sec the athlete will complete = 140 / 40 = 3.5 (three and a half) rounds. One round is considered as the circumference of the circular track. The distance covered in 140 sec = 2πr×3.5=2×3.14×100×3.5=2200 m.