The figure below shows an object initially at point A traveling in the +x-direction. It turns in a circular path at constant speed until it is traveling in the +y-direction at point C. The quarter-circle arc from A to C is 250 m in length, and the particle moves from A to C in 38.0 s. Point B on the path is 35.0 below the x-axis. What is the magnitude and direction of the acceleration when the object is at point B? (Enter the magnitude in m/s and the direction in degrees counterclockwise from the +x-axis.)