Solve the all parts of given question:
Question: A block with mass mA = 15.0kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second block with mass mB = 4.5kg which hangs vertically.
Part I: Determine the magnitude of the acceleration of the system.
Part II: If initially mA is at rest 1.250 m from the edge of the table, how long does it take to reach the edge of the table if the system is allowed to move freely?
Part III: If mB = 1.0 kg, how large must mA be if the acceleration of the system is to be kept at 0.01 g?
I need expert help to solve the above question and express your answers in two significant figures include units.