(50 points) The velocity field of a flow is given by V=ui+vj=(6y+2)ti+(4x7)jm/s, where x and y are in meter and t is in second. a) (30 points) Determine the streamline equation that at the point (x,y)=(3,8) and t=1s. b) ( 20 points) Determine the magnitude of the acceleration at the point (x,y)=(3,8) and t=1s