An athlete comples one round of a circular track of diameter 200m in 40 s. What will be the distance covered and the displacement at the end of 2 minutes 20 second
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Diameter= 200 m.
Start position point A. (See fig.).
Completes round in 40 sec.
Circumference = pi * 200 m covered in 40 sec.
In 2 min 20 sec. that is in 140 sec., he will complete 140/40 = 3 & half rounds.
He will be at point B.
Total distance covered will be
3 and half times Circumference
= 7/2 * 200 * 22/7 = 2200 m.
Start position point A. (See fig.).
Completes round in 40 sec.
Circumference = pi * 200 m covered in 40 sec.
In 2 min 20 sec. that is in 140 sec., he will complete 140/40 = 3 & half rounds.
He will be at point B.
Total distance covered will be
3 and half times Circumference
= 7/2 * 200 * 22/7 = 2200 m.
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