A completes half of circle in 5s what is the distance covered its displacement speed velocity if the radius of circle is 15cm
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t=5sec
distance=2πr/2(since it travelled half the circle)
=2π(15)/2
=15π cm
displacement=radius of circle=15cm =0.15m
velocity=displacement/time
=0.15/5=0.3ms^-1
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