A caris traveling at a constant speed along a straight section of rced as shown in the figure. A camera is set upaa distance d= 90 m from the roed,

as shown in the figure. The camera rotates to track the car. Atthe instant shown, the angle = 55° and the rate at whichchanges (the angular velocity of the camera, deloct in order to track the car is 0.1 rad's clockwse. The magnitude of the anguiar acceleration of the camera (d-ivd in radis at this instant is most nearly