A10.5 - A 20-inch-long horizontal link is pinned to the ground on its right-hand end and rotates counterclockwise at 2 rad/s, accelerating 1 rad/s/s. A sliding link is attached to

the other end of the horizontal link, traveling along it at a constant 12 in/s, toward the pinned end. Calculate the magnitude and direction of the acceleration of the slider with respect to the ground.