Question

Ajitha takes 19.8 seconds to complete one lapse running around a circular ground of diameter 14m. Find her speed?

Answer 1

Answer: Ajitha's speed would be 2.22 m/s.

Step-by-step explanation:

Given that,

The diameter of the circular ground, d= 14 m

The radius of the circular ground, r= d/2= 14/2= 7 m

So,

The circumference of the circular ground= 2*pi*r= 2*22/7*7= 44 m

Time taken to complete one lapse= 19.8 s

Speed= circumference/time taken= 44/19.8

Speed= 19.22 m/s (approx)