What is the interaction that occurs when a rocket lifts off?

The interaction that occurs when a rocket lifts off is primarily between the rocket and the exhaust gases. As the rocket engines ignite, they burn fuel and generate a large amount of hot gas. This gas is expelled downwards with great force. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Therefore, the action of the rocket pushing the exhaust gases downwards creates an equal and opposite reaction, which pushes the rocket upwards.

This upward thrust is what enables the rocket to overcome gravitational pull and ascend into the atmosphere. The expulsion of exhaust gases at high speed is crucial for generating the necessary lift, making this interaction the fundamental mechanism behind the rocket's launch. Understanding this principle is essential in grasping how rockets are propelled in space exploration.