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The length of minute hand of a clock is 5 cm .Calculate its speed.
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The question is not quite clear - I guess it means the speed of the tip of the minute hand ?
Ask yourself, how long does it take the minute hand to make one complete revolution ?
Then you need to think about how much distance the tip of the minute hand covers in one complete revolution.
Then you have all the information you need to calculate the speed of the tip of the minute hand : )
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