I found out that items with 2 sides tended to flip when dropped to the floor, and items with 3D form tended to roll and bounce. Paper reacted with the air, and heavier objects reacted with the floor. I find that interesting because it’s relation with the architecture of the space. Some items reacted the most with the negative space, or the space that’s not occupied by a wall or floor. While other items reacted the most with the positive space: the floor.