Explains Anything on Instagram: "This clip shows a perfect mix of motion, inertia, and gravity at work.When the glass is hit, the glass moves before the water does. Water has inertia — meaning it tends to stay in place until a force acts on it. . . Because the water reacts a split-second later, it rises and spills in that dramatic wave shape.Gravity then pulls the water downward, creating the smooth curve you see as it falls. . . It looks like magic, but it’s just physics: the glass moves quickl