Question

The length of minute hand of a clock is 5 cm .Calculate its speed.

Answer 1

The question is not quite clear - I guess it means the speed of the tip of the minute hand ?

Answer 2

Ask yourself, how long does it take the minute hand to make one complete revolution ?

Answer 3

Then you need to think about how much distance the tip of the minute hand covers in one complete revolution.

Answer 4

Then you have all the information you need to calculate the speed of the tip of the minute hand : )