Question

An athelete completes one round of a circular track of diameter 200m in 40s.What will be the distance covered and the displacement at the end of 2minutes 20s? ​

Answer 1

d=200=r=100m

t=40sec

t=2×60+20

t=140sec

now....

d=distance/time

=100/140

=10/14

= 0.7142_ _ _

Answer 2

In 40 second he complete one round of the circle but in 2 minute 20 sec mean 140 second so his displacement is 314

Explanation: