The displacement of particle varies with time as \( S= \) P \( 3 t^...

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The displacement of particle varies with time as \( S= \)
P \( 3 t^{2}+2 t \)

W
Find the velocity of the particle at \( t=1 \mathrm{sec} \).
(1) \( 5 \mathrm{~m} / \mathrm{s} \)
(2) \( 2 \mathrm{~m} / \mathrm{s} \)
(3) \( 8 \mathrm{~m} / \mathrm{s} \)
(4) \( 6 \mathrm{~m} / \mathrm{s} \)
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