$.$ A propeller with $4$ blades is rotating clockwise at $60\backslash ,\backslash$text$\{$rad$/$s$\}.$ Air is supplied at a mass flow rate of $1\mathrm{.}75\backslash ,\backslash$text$\{$kg$/$s$\}$ toward the axis of rotation. Answer the following questions. Assume the density of air is $1\backslash ,\backslash$text$\{$kg$/$m$\}^3.($PO$1,$ PO$3)($a$)$ Find the absolute velocity of the air at the nozzle outlet in the rotational direction. $(10$ points$)($b$)$ Determine the torque $($frictional resistance$)$ at bearing A$.(20$ points$)$

My $($a$)$answer was $85\mathrm{.}7$ m$/$s but the result answer is $25\mathrm{.}7$m$/$s