An athlete completes one round of a circular track of radius 10$\ m$ in 40$\ sec.$ The distance covered by him in 2 $\min$ 20 $\sec$ is

Question

Dr. Abubacker · Accepted Answer

(d) Time period = 40$\ sec$
No. of revolution = $\frac{Total\ time}{Time\ period} = \frac{140\ sec}{40\ sec} = 3.5\ Rev.$
So, distance $= 3.5 	imes 2\pi R = 3.5 	imes 2\pi 	imes 10 = 220m.$

Q. An athlete completes one round of a circular track of radius 10$\ m$ in 40$\ sec.$ The distance covered by him in 2 $\min$ 20 $\sec$ is

Explanation

Reviewed by Dr. Abubacker

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