\textbf{162-} A particle with constant acceleration $\vec{a} = \left(4\dfrac{\text{m}}{\text{s}^2}\right)\hat{i}$ moves in the direction of the $x$-axis. If this particle covers 4 meters more distance in the third second than in the second second, what is the initial velocity in meters per second?
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(1) $8$ \hspace{1cm} (2) $6$ \hspace{1cm} (3) $4$ \hspace{1cm} (4) $2$
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\textbf{Calculation Space}
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