Section-C: Comprehension Type
A uniform disc of mass 1 kg and radius 20 cm is rolling purely on a flat horizontal surface. Its center C is moving with acceleration a = 20 m/s2 and velocity v = 4 m/s at a certain instant. At this instant, points A and B are located on the disc as shown in the diagram, with AC = BC = 10 cm.
What is the acceleration magnitude of point A?