Disk A rotates about the fixed axis at Point $O$ at an angular velocity of $4\mathrm{.}00ra\frac{d}{s}$ counterclockwise and an angular acceleration of $6\mathrm{.}00ra\frac{d}{s^2}$ clockwise. Disk $B$ is connected to Disk A with a frictionless pin. At the position shown, Disk $B$ has an angular velocity of $12\mathrm{.}0ra\frac{d}{s}$ counterclockwise and an angular acceleration of $20\mathrm{.}0ra\frac{d}{s^2}$ counterclockwise. Calculate the magnitude and direction of the translational acceleration vector of Point $Q,$ which is on Disk $B.$