(Conservation of mass) For a certain incompressible flow field it is suggested that the velocity components are given by the equations
$u = x^2y$, $v = 4y^3z$, $w = 2z$
Is this a physically possible flow field?
No, it's not possible since the conservation of mass condition is not satisfied.
Yes, it's possible.
No, it's not possible since the components depend on x, y and z.
No, it's not possible since the fluid with given components is not incompressible.