Two forces are applied to a $5\mathrm{.}0-kg$ crate; one is $6\mathrm{.}0$ N to the north and the other is $8\mathrm{.}0$ N to the west. The magnitude of the acceleration of the crate is

$0\mathrm{.}50\frac{m}{s^2}$

$50\frac{m}{s^2}$

$10\frac{m}{s^2}$

$2\mathrm{.}0\frac{m}{s^2}$

$2\mathrm{.}8\frac{m}{s^2}$