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An athlete completes one round of …

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

    • Posted by Samridhi Karn Samridhi Karn 3 weeks ago

    CBSE > Class 09 > Science
    • 2 answers

    Ayush Debnath 2 weeks, 5 days ago

    Given that, Diameter=200m So, Radius=200÷2=100m Time taken for one round=40sec We know, Circumference of a circle=2πr Time=2mins 20sec =(120+20)sec =140sec So, Total distance covered in 140sec is=140÷40 =3.5 rounds(Ans) Distance = 3.5×2πr =3.5×2×22×100÷7 = 2200m (Ans)

    2Thank You

    Harshit Verma 2 weeks, 5 days ago

    What is meant by a pure substance

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