The point from where a ball is projected is taken as the origin of the coordinate axes. The \( x...

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The point from where a ball is projected is taken as the origin of the coordinate axes. The \( x \) and \( y \) components of its displacement are given by \( x=6 t \) and \( y=8 t-5 t^{2} \). What is the velocity of projection?
(1) \( 6 \mathrm{~m} \mathrm{~s}^{-1} \)
(2) \( 8 \mathrm{~m} \mathrm{~s}^{-1} \)
(3) \( 10 \mathrm{~m} \mathrm{~s}^{-1} \)
(4) \( 14 \mathrm{~m} \mathrm{~s}^{-1} \)
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