Question

The seconds hand of a clock is 2.0 cm long. Calculate : 0 the speed of the tip of the hand
the velocity at 0.0 second and at 15 second, (m) the change in velocity from 0.0 to 15 sen
C) average acceleration​

Answer 1

Answer:

It's average velocity will be zero as there will be no displacement after one rotation. But if you are asking about the speed then here is your solution :-

Distance travelled by tip in one rotation = 2pi*r

= 2 * 22/7 * 2 = 88/7 cm

Time = 1 min = 60 seconds

So, Speed = 88/(60*7) = 88/420 cm/sec = 0.209 cm/sec or 0.21 cm/sec

Explanation:

Answer 2

Explanation:

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