Please answer all parts of question correctly with all steps for a like...

9. [2 points] For the flow shown, indicate the direction of shear stress on the surface AA of the fluid element. Indicate also whether the stress is positive or negative. Assume x direction to be horizontal with positive to the right and y direction to be vertical with positive direction up. Clearly show how you got to your answers. Answer Shear stress direction (up/down) = Shear stress is (+/)=