bill drives his car 20 times around a circular track in 50s.the track is 100m in diameter .what is bills average velocity?
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Total perimeter of track = pi * Diameter = 100pi
Total distance travelled = 20*100pi = 2000 pi
Time Taken = 50s
Avg. Velocity = Speed = 2000 pi / 50
= 2000*22 / 50*7
= 125.66 m/s
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