Question

1. how is newtons third law used to explain a rocket moving through space?

the rocket pushes against its own fuel.
the force of the rocket is proportional to its mass, which allows the rocket to accelerate in space.
the rocket uses air currents in space to move.
no forces act on the rocket; therefore, the force that caused it to take off propels it through space because of inertia

Explanation:

Newton's third law states that for every action, there is an equal and opposite reaction. A rocket expels high-speed fuel backward (action force), and the fuel exerts an equal forward force on the rocket (reaction force), which propels it through space. The other options are incorrect: the second option relates to Newton's second law, space has no air currents for the third option, and the fourth option incorrectly claims no forces act on the rocket (the reaction force from fuel does act on it).

Answer:

A. The rocket pushes against its own fuel