Question

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? it has inertia. it has less friction. it loses gravity when in motion. it is in static equilibrium.

Explanation:

1. Analyze the concept of inertia: Inertia is the tendency of an object to resist a change in its state of motion. When the car is moving, the water in the bottle is also moving at the same velocity as the car. When the car stops suddenly, the bottle (held by the passenger) stops, but the water, due to its inertia, tends to continue moving forward, causing it to splash out.
2. Evaluate other options:

• "It has less friction": Friction is not the main reason for the water splashing out in this scenario. The water splashes because of its tendency to keep moving, not because of low friction.
• "It loses gravity when in motion": Gravity is a force that acts on objects near the Earth's surface and does not disappear when the object is in motion. This statement is incorrect.
• "It is in static equilibrium": Static equilibrium means the object is at rest or moving with a constant velocity and the net force on it is zero. When the car stops suddenly, the water is not in static equilibrium as its state of motion is changing.

Answer:

A. It has inertia.