A person completed two rounds of of a circular track in 20 minutes full stop in the radius of the track is 30 calculate the velocity e of the person
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total distance traveled by person =2(2*π*r)
where r is the radius of circular track
so total distance=2*2*3.14*30 meter
speed = distance/time
time =20 min= 20*60 sec
so velocity e= (2*2*3.14*30)/(20*30)= 0.628 m/s
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