A $15\mathrm{.}0$ kg block is acted on by a $80\mathrm{.}0$ N force acting $42\mathrm{.}0$o above the horizontal.$$ Take $$k $=0\mathrm{.}200$ and $$s $=0\mathrm{.}500.($a$)$ Does the block move if it is initially at rest?

$($b$)$ If the block was moving to the right, what is the acceleration?