A flat plate of width L = 1 m  is pushed down with a velocity U = 0.01 m/s towards a wall resulting in the drainage of the fluid between the plate and the wall as shown in the figure. Assume two-dimensional incompressible flow and that the plate remains parallel to the wall. The average velocity, U_avg of the fluid (in m/s) draining out at the instant shows in the figure is ___________ (correct to three decimal places).