The stream function of a two-dimensional, incompressible flow field is given by v=axy, where x and y are in meters, and a is a dimensional constant, 5/s· dy find the x and y components of velocity in this flow field, named u and v, respectively, at (x, y) (2, 1). ii) calculate the acceleration of a fluid particle at the point (x, ,1). (iii) is the flow steady? (iv) is the flow irrotational?