PART A: Short Answer Questions (2 marks each: total 16 marks) 'I. Is it possible to ever have a situation where an object is accelerating and has a velocity of zero? Explain. (C) An object rests on a ramp. As the high end of the ramp is raised further, the angle of inclination increases causing the object to start moving. With the help of a free-body diagram, explain why this happens. (C) Why does \"centripetal force\" not appear on free-body diagrams? (C) A ball is dropped. bouncing on the oor. Would the collision between the ball and the floor be elastic or inelastic? What physical observations would lead to this conclusion? (C)