4. 2D Kinematics

A $2.00$-kg box is moving to the right with speed $9.00$ m/s on a horizontal, frictionless surface. At $t=0$ a horizontal force is applied to the box. The force is directed to the left and has magnitude $F\left(t\right)=$ ($6.00$ N/s²)t². What distance does the box move from its position at $t=0$ before its speed is reduced to zero?