The box slides down the slope described by the equation y$=(0\mathrm{.}05$x$2)$y$=(0\mathrm{.}05$x$2)$ mm$,$ where x is in meters.

If the box has x components of velocity and acceleration of vx $=-4$ m$/$s and ax $=-2\mathrm{.}0$ m$/$s$2$ at x $=4$

m$,$ determine the y component of the velocity of the box at this instant.

Express your answer to three significant figures and include the appropriate units.

$2-$Determine the y component of the acceleration of the box at this instant.

Express your answer to three significant figures and include the appropriate units.