Question

2.An athlete completes one round of a circular track of diameter 500m in 100s. What will be the displacement of an athlete at the end of 5mins?​

Answer 1

Hey army!!

refer to the attachment for your answer

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Answer 2

diametre of circular track, AB=200m.

Time taken to complete one round =40s

Total time =2min20s=(2×60+20)s=140s

Number of rounds completed =14040=3.5

Distance covered =2πr×3.5

=2×(22/7)×(200/2)×3.5m=2200m

If the athlete starts from A, on completion of 3.5 rounds, he will be at B.

Thus, displacement =AB−→−=200m (in magnitude).

Explanation:

hope this helps you.