Question

how does newtons third law of motion apply to rocket propulsion?
the rocket moves forward because the air pushes it.
the rocket moves forward because the fuel pushes it forward.
the rocket moves forward because the ground pushes it.
the rocket moves forward because the fuel pushes it backward.

Explanation:

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. In rocket propulsion, the rocket expels fuel backward (action). According to the law, there is an equal and opposite reaction force that pushes the rocket forward.

Answer:

The rocket moves forward because the fuel pushes it backward.