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Explanation:
A circular track with diameter = 200 is coverd by an athelete in 40 secs means 40secs is the time in which the athelete completes 1 round.
The distance covered by an athelete= circumfernce of the circular path
Answer-:
Distance covered by the athlete in 40sec = 2 pie r
= 2* 22/7*200/2
= 2*22/7*100
=6.28*100
=628m
Distance covered in 2min 20sec= 140sec*628=87920=87km920m
To calculate the displacement you have to divide this by 40 secs to calculate the number of rounds and then u can find the displacement if the number of round is in whole like- 2,3,4 then the displacement is zero but if it is like - 2and half then the displacement will be equal to the diameter
Hope this solution helped u
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