TEACHER An object travels in a vertical circle of 1.55 m radius. When the object is traveling downward and is 32.50 from its lowest point, its total acceleration is a = (18.51 + 16.2j) m/s2. At this instant, determine the following. (Take the angle 32.50 clockwise from the axis of the circle that intersects the center and the lowest point. Assume that the +x axis is to the right and the +y axis is up along the page.) (a) magnitude of the radial acceleration m/s2 (b) magnitude of the tangential acceleration m/s2 (c) speed of the object m/s (d) velocity of the object (Express your answer in vector form. ) V m/s