Motion in A Plane

Question: The length of second's hand in a watch is 1 cm. The change in velocity of its tip in 15 seconds is

1) Zero

2) \[\frac{\pi }{{30\sqrt 2 }}cm/\sec \]

3) \[\frac{\pi }{{30}}cm/\sec \]

4) \[\frac{{\pi \sqrt 2 }}{{30}}cm/\sec \]

Solution:

Explanation: Explanation

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