Question

Length of the minute hand in a clock is 10 cm, Find difference between average speed and magnitude of average velocity (in cm/min) of tip of the minute hand from 6 a.m. to 6:20​

Answer 1

Between 6:00 to am 6:20

Average Speed = Total Distance /Time

Average Speed = Total Distance /Time= πr/(20*60sec)

*60sec)=4π/1200

00=0.0104cm/sec.

Average Velocity =Total Displacement/Time

=2r/(20*60sec)

9/1200

=0.0075cm

Average Speed and Average Velocity between 6:00 to 6:20 pm is same as that of between 6 to 6:20 am

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