The position vector of an object is given by vec$(r)hat(i)hat(j)$

The magnitude of the acceleration $($in $\frac{m}{s^2})$ of the object at time $t=3s$ is

$20\mathrm{.}59$

$12\mathrm{.}41$

$14\mathrm{.}42$

$24\mathrm{.}66$

$62\mathrm{.}64$