Question

The length of a second's hand of a clock is 4cm. The speed of tip of the second's hand is:

(A) 0.24 cm/s
(B) 0.32 cm/s
(C) 0.42 cm/s
(D) 0.50 cm/s

Please explain the solution.​

Answer 1

The length of a second's hand of a clock is 4cm. The speed of tip of the second's hand is 32.