Question

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which one of the following descriptions violates newtons first law of motion?
○ a small suitcase is at the front of the overhead luggage compartment on an airplane. when the airplane begins its takeoff, the suitcase slides to the rear of the compartment.
○ a rabbits foot is hanging on a chain from the rearview mirror of a car. as the car accelerates, the rabbits foot swings toward the windshield.
○ a child is sitting in the back seat of a car and is not wearing a seat belt. the car is traveling forward, and the driver suddenly applies the brakes. the child flies forward against the rear side of the front seat.
○ a glass of water is sitting on a table in the dining car of a train. the train brakes as it nears the station, and the glass slides forward.

Explanation:

Newton's first law (law of inertia) states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. In all the given scenarios except one, the motion of the object is consistent with inertia. When the car accelerates, the rabbit's foot should swing backward relative to the accelerating frame, not toward the windshield. This violates Newton's first - law as it doesn't follow the principle of inertia.

Answer:

A rabbit's foot is hanging on a chain from the rearview mirror of a car. As the car accelerates, the rabbit's foot swings toward the windshield.