The velocity field of a flow is given by V = 28y/(x2 + y2)1/2j - 28x/(x2 + y2)/2j ft/s, where x and y are in feet. Determine (a) the fluid speed at points along the x axis; (b) the fluid speed at points along the y axis. What is the angle between the velocity vector and the x axis (use the range (-180°; 180°]) at points (c) (x, y) = ( 9, 0); (d) (x, y) = ( 9, 9); (e) (x, y) = (0, 9)? (a) Vx = i ft/s. (b) vy= i ft/s. %3D (c) 0 = (d) 0 = i (e) 0 = i