Question

An athlete completes one round of a circular track of diameter 200 m in 40 s . what will be the distance covered and displacement at the end of 2 minutes 20 s?
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Answer 1

Diameter of the circular ground =. 200m
Time taken = 20 secs
Radius = 200m/2
=> 100m

Circumference of circle = 2πr
=> 2*22/7*100
=>4400/7
=>628.57m

Distance covered at the end of 1 sec = 628.57/40
=>15.71 m

2 min 20 secs = 140 seconds

Distance covered at the end of 2mins 20secs = 15.71 * 140 = 2199.4 m

Displacement at the end of 2min 20 secs= 3.499m

Hence,
Distance at the end of 2mins 20 secs=2199.4m
Displacement at the end of 2 mins 20 secs = 3.499m

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Answer 2

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