def part_a( self ): ''' a) ideal trajectory: no drag (C=0) and no spin (-> Magnus force = 0) [2 points] ''' initial_velocity = self.initial_velocity dimpled = False spin = 0 def C( v, dimpled ): return 0 for initial_angle in self.initial_angles_degrees: part_a_ball = Golf( initial_velocity, initial_angle, C, dimpled, spin ) part_a_ball.display_plot() for filetype in self.filetypes: part_a_ball.save_plot( filetype )