Question

Please answer fast it's really important please

Answer 1

Answer:(1) 9.5 cm

Explanation:

Given :

The linear speed of the second hand = 1 cm/s

To find :

The length of the second hand .

Solution :

The second's hand covers 2π rad in 60 seconds .

The angular speed of the second hand = 2π / 60 rad/s

radius or length of the second hand = ( linear speed ) / ( angular speed )

=> length = 1 * 60 /  2π

=> length = 9.5 cm ( approx. )

The length of the second hand is nearly 9.5 cm .

hope it helps:)