Air flow over a thin flat plate are shown below for two cases. The velocity profiles and boundary thicknesses are to scail.

For these two situations

the Reynolds number for case $A$ is lower than that for case $B.$

the Reynolds number for case $A$ is higher than that for case $B.$

the Reynolds numbers for case A and $B$ are the same.

The average pressure and shear stress acting on the surface of the $1\mathrm{.}1-m^2$ flat plate are as indicated in the figure below. Determine $($a$)$ the lift generated,

$($b$)$ the drag generated,

$($c$)$ the lift if the shear stress is neglected,

$($d$)$ the drag if the shear stress is neglected.

Assume $p_1=-1\mathrm{.}1k\frac{N}{m^2},{}_1=5\mathrm{.}7{10}^{-2}k\frac{N}{m^2},p_2=2\mathrm{.}4k\frac{N}{m^2},{}_2=7\mathrm{.}6{10}^{-2}k\frac{N}{m^2},$ and $=7.$

$($a$)L=$ kN

$($b$)D=$ kN

$($c$)L=$ kN

$($d$)D=$ kN