The length of a minute hand of a clock is 7 cm. Find out the average s

1.	The length of a minute hand of a clock is 7 cm. Find out the average speed and average velocity (in cm/min) of the tip of the minute hand when it moves during a time interval from 3: 15 pm to 3: 45 pm? fast pls fast
Answer» Explanation: CORRECT option is C 69.7×10−5 The distance moved by tip of MINUTES hand when it MOVES during a TIME interval from 3 p.m. to 3.45 p.m. is rθ where, r = LENGTH of minute hand θ = angle moved by minutes hand ⇒ Distance covered =4×23π=6πcm ⇒distance=6πcm=0.06πm ⇒velocity=timedistance ⇒velocity=45×600.06π=69.7×10−5ms−1

The length of a minute hand of a clock is 7 cm. Find out the average speed and average velocity (in cm/min) of the tip of the minute hand when it moves during a time interval from 3: 15 pm to 3: 45 pm? fast pls fast

Answer»

Explanation:

CORRECT option is

69.7×10−5

The distance moved by tip of MINUTES hand when it MOVES during a TIME interval from 3 p.m. to 3.45 p.m. is rθ

where, r = LENGTH of minute hand

θ = angle moved by minutes hand

⇒ Distance covered =4×23π=6πcm

⇒distance=6πcm=0.06πm

⇒velocity=timedistance

⇒velocity=45×600.06π=69.7×10−5ms−1