A passenger in a car is holding an open water bottle when the car stops suddenly. Why does the water in the bottle splash out when the car stops?

When the car stops suddenly, the water tends to keep moving forward because of inertia, the tendency of an object to resist a change in its motion. The water continues moving relative to the bottle and can splash out. So the correct choice is “It has inertia.”

AI-written and checked against the verified answer.