An athlete completes one round of a circular round of a circular track of diameter 200m in 40s. What will be the distance covered and the displacement at the end of 2 mins 20s? With steps plse..
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Hlo frnd,
Time taken = 2 min 20 sec = 140 sec.
Radius, r = 100 m.
In 40 sec the athlete complete one round.
So, in 140 sec the athlete will complete = 140 ÷ 40 = 3.5 (three and a half)round.
Or, distance covered in 140 sec = 2πr x 3.5 = 2 x 22/7 x 100 x 3.5 = 2200 m, Ans.
At the end of his motion, the athlete will be in the diametrically opposite position.
Or, displacement = diameter = 200 m, Ans.
I hope this answer will help u
Time taken = 2 min 20 sec = 140 sec.
Radius, r = 100 m.
In 40 sec the athlete complete one round.
So, in 140 sec the athlete will complete = 140 ÷ 40 = 3.5 (three and a half)round.
Or, distance covered in 140 sec = 2πr x 3.5 = 2 x 22/7 x 100 x 3.5 = 2200 m, Ans.
At the end of his motion, the athlete will be in the diametrically opposite position.
Or, displacement = diameter = 200 m, Ans.
I hope this answer will help u
Answered by
21
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