(a) show that the complex potential flow making (b) describe the flow field whose complex potential is given by ueiz determines a uniform angle a with respect to the r-axis and having speed u.

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.