$(4)$ A steady, incompressible, two$-$dimensional $($in the xy$-$plane$)$ velocity field is given by

$$

$($a$)$ Calculate the acceleration vector equations for each direction.

$$

$($b$)$ Find the acceleration component values at the point $($x$,$ y$)=(-1\mathrm{.}55,2\mathrm{.}07).$