Question

an athletic complete one round of a circular track of 40s. what will be the distance covered and displacement at the end of 2 min and 20s​

Answer 1

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An athletic complete one round of a circular track of 40s. what will be the distance covered and displacement at the end of 2 min and 20s

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⏩ The Distance covered is 2200 m and the Displacement is 200 m.

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The diameter of the circular track is given as 200 m.

=> 2r = 200 m.

=> r. = 200/2

➡ r = 100 m

In 40 sec the athlete complete one round.

So, in 2 mins and 20 secs, ( 140 sec ) the

athlete will complete => 140 / 40 = 3.5 rounds.

One round = the circumference of the circular track

The distance covered in 140 sec =

✒ 2πr×3.5

=2×3.14×100×3.5

➡ 2200 m.

For each complete round the displacement is zero.

➡ Therefore for 3 complete rounds, the displacement will be zero.

At the end of his motion, the athlete will be in the diametrically opposite position.

Displacement ➡ Diameter = 200 m.

✒Hence, the distance covered is 2200 m and the displacement is 200 m.

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Answer 2

1 distance covered =2200

Diameters.. =200

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