A particle initially at rest starts moving from reference point x=0 along x -axis, with velocity v that varies as v=4 √ x m / s. The acceleration of…

A particle initially at rest starts moving from reference point $\displaystyle x=0$ along $\displaystyle x$-axis, with velocity $\displaystyle v$ that varies as $\displaystyle v=4 \sqrt{x} \mathrm{~m} / \mathrm{s}$. The acceleration of the particle is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{ms}^{-2}$.