Solving a problem in physics section 30 point 54 mechan

54. A ball of radius R = 10 cm rolls without sliding on the horizontal plane so that its center (point C in Fig.) Is moving with a constant acceleration a = 2.5 cm / s2. After t = 2,0 s after the beginning of its motion corresponds to the position of the figure. Search:
  a) speed points A and B;
  b) the acceleration of points A and D.