Question

Length of minute hand of clock is 4.5cm find average velocity of tip of minute hand between 6 am to 6:30 m &6am ro 6:30pm

Answer 1

avg vel. =2L/30×60

4.5×2/1800

1/900cm/sec

avg vel. =4.5×2/12×3600+30×60

=9/45000

=1/5000 cm/s

Answer 2

Answer:

Avg velocity b/t 6 am to 6. 30 am=

$\frac{2 \times 4.5}{30 \times 60} \\ = \frac{9}{1800} \\ = \frac{1}{200} \frac{cm}{s }$

Avg velocity b/t 6am to 6.30 pm

• t=12h30m
• displacement =9cm