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A body is projected with a velocity of \( 60 \mathrm{~m} \mathrm{~s}^{-1} \) at \( 30^{\circ} \) to horizontal.
\begin{tabular}{|ll|ll|}
\hline & \multicolumn{1}{|c|}{ Column I } & & \multicolumn{1}{c|}{ Column II } \\
\hline i. & Initial velocity vector & a. & \( 60 \sqrt{3} \hat{i}+40 \hat{j} \) \\
\hline ii. & Velocity after \( 3 \mathrm{~s} \) & b. & \( 30 \sqrt{3} \hat{i}+10 \hat{j} \) \\
\hline iii. & Displacement after \( 2 \mathrm{~s} \) & c. & \( 30 \sqrt{3} \hat{i}+30 \hat{j} \) \\
\hline iv. \( \quad \) Velocity after \( 2 \mathrm{~s} \) & d. \( 30 \sqrt{3} \hat{i} \) \\
\hline
\end{tabular}
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