Question

the seconds hand of the clock is 14 cm long the average speed of the tip of the seconds hand in 15 seconds is how many cm/s?​

Answer 1

Perimeter of clock = 2πr

= 2 × 22/7 × 14 = 88cm

Perimeter = 88cm

Length of 1 sec = 88/60 = 22/15 cm

Distance covered by Second Hand in 15 sec =

15 × 22/15 = 22 cm