Please solve correctly and explain if possible.

4) The velocity in a pipe in turbulent flow is expressed by the following equation: 1 u=k [] t is the sheer stress in N/m2 at the pipe wall, p is the density of the fluid in kg/m3 u is the velocity, and k is a coefficient. Modify the equation so that the shear stress can be introduced in lbf/ft2, and the density in lbm/ft3, so that the velocity u comes out in ft/s