$In$ your answer, all vectors should $be$ given $as$ a component form.

The motion $of$ a point $is$ given $by$ the equations:

$x=sint-t,$ and $,y=t^3$

where $x$ and $y$ are $in$ meters and $tisin$ seconds. Find the acceleration vector $of$ the point $att=2sec.$

$[10pts]$