The length of the second hand of a watch is 1 cm. What is the velocity of the tip of the second hand in cm/s ?
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: The length of second's hand in watch is 1 cm. The change in velocity of its tip in 15 second is.? The tip of the second's hand moves (2*pi*1)cm distance in 60 seconds. Thus it's speed is (pi/30)cm/s.
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