Physics may refer to: The movement of entities - falling blocks, moving vehicles, and projectiles (including mobs launched into the air). The flow of fluids - lava and water, which can wash out or burn blocks. The signal of redstone - an "electrical" signal which travels through wires and powers certain objects. This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.