Question

1. when a car suddenly stops, the objects in the back seat are thrown forward. this is explained by- air resistance magnetism friction inertia

Explanation:

Newton's first law of motion (inertia) states that an object in motion will stay in motion unless acted upon by an external force. When the car stops suddenly, the objects in the back seat, which were in motion with the car, continue moving forward due to their inertia until a force (like the seatbelt or the front of the car) acts on them. Air resistance, magnetism, and friction are not the primary causes here. Air resistance acts opposite to the direction of motion and is not relevant in this sudden - stop scenario. Magnetism is a force between magnetic materials and has no relation to the forward - throwing of objects in a car. Friction, while a force that opposes motion, is not the force that causes the objects to be thrown forward; it is more relevant in situations where objects are sliding on surfaces.

Answer:

inertia