In this scenario, the student is a passive participant in the process. The information learned is impersonal. Clearly, the teacher is in control of the learning process; his or her interests dictate what and how fast the students learn.
The answer in all three cases is that rudder is used to help maintain stability in the roll. A little rudder at just the right time can help keep the nose up in a slow roll or even an aileron roll, as the plane rotates through the sideways portions of the roll when gravity is otherwise not countered.
Flanking rudders effect a vessel's heading because of the (one of the next answers) 1. effect of the propeller flow on the rudders. 2. water flo due to the vessel's movement through the water. 3.tunnel effect of the water flow past opposing rudders. 4.discharge current being channeled to im pinge on the vessel's deadwood. Which answer fits best?