. A two-dimensional duct contains a straight sides contraction as in figure below. The depth is constant at 30 cm. At a certain time and incompressible fluid flows in the duct at a rate of 0.3 m/s and is decreasing at the rate of 0.1 m3/s per second. Estimate the acceleration at the section AA 20 cm from the inlet 60 cm A 50 cm 20 cm 20 cm