physics

A cyclist moving on a circular track of radius 50m completes one revolution in 4min .what is the average speed

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  1. 50*2pi/4 m/min

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  2. Circumference = pi*2r = 3.14*100 = 314 m

    V=1rev/4min*314m/1rev1*1min/60s=1.31m/s

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  3. 55/42 m/s
    Correct ans only

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