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Average Velocity in 2D Motion

A clock has i...

Question

A clock has its second hand $2.0 c m$ long. Find the average speed and modulus of average velocity of the tip of the second half in $15 s$ .

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Solution

$a v g s p e e d = \frac{2 π r / 4}{15} c m / s = \frac{π}{15} c m / s a v g v e l o c i t y = \frac{2 \sqrt{2}}{15} c m / s$

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