These are two different assignments that were done over two weeks but they cover the same basic principles: overlap and follow-through.
The first assignment involved a pendulum. My task was to simulate the effects of moving one at it's base by showing the ball dragging behind and then continuing it's momentum even after the base has stopped. The hardest task was making the stiff bamboo-looking model appear to be as loose as a chain. I'm not sure as to how successful I was.