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 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 sown in the figure. Assume two-dimensional incompressible flow and that the plate remains parallel to the wall. The average velocity, $u_{\text{avg}}$ of the fluid (in $m/s$) draining out at the instant shown in the figure is ____ (correct to three decimal places).

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0.025

Sir if we assume that B > > L then it comes 0.05 in that case we assume 1D flow but in question he mentione that 2D flow
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