The perpetually bouncing ball relies heavily on the principles of "Squash and Stretch" along with "Slow In and Slow Out." The bouncing ball moves faster as it approaches and leaves the ground. You can also witness the exaggerated way that the ball makes contact with the ground (Squash and Stretch).
In contrast to this rubber ball bouncing, I chose a much heavier ball to show a drastic change in physics. This second ball relies heavily on the principles of "Arc" and "Secondary Action." You can see how the arc of the ball's trajectory is more exaggerated to add emphasis. The secondary action of the wall breaking is also vital because it adds a reference point for how heavy the ball is.
Overall I found this project very educational because it taught me that every scenario being animated might call upon any variety and combination of principles to make it work. It is vital to understand which principles will help you convey the scene to the audience the best.