Water with a kinematic viscosity

u $=10-6$ m$2/$sec flows along a duct. At one particular x$-$location, it momentarily has the velocity profile: u $=40$ y $+24$ y$2.$ What is the shear stress $\backslash$tau xy at y $=0\mathrm{.}03$ m$?$ Give your answer in N$/$m$2$ to at least $4$ decimal places.