Here's why:
* Newton's Third Law: For every action, there is an equal and opposite reaction.
* Rocket Propulsion: Rockets work by expelling hot gases downwards (the action). This downward force creates an equal and opposite upward force on the rocket (the reaction), propelling it upwards.
How it Works:
1. Combustion: The rocket engine burns fuel, producing hot gases.
2. Expansion: The hot gases expand rapidly and are expelled out of the nozzle at high velocity.
3. Force and Reaction: The expulsion of the gases creates a downward force (action). This force is countered by an equal and opposite upward force (reaction) on the rocket.
4. Liftoff: If the upward force exceeds the weight of the rocket, it will lift off the ground and continue to accelerate upwards.
Important Note: While Newton's Third Law is the fundamental principle, other factors like gravity, air resistance, and the rocket's design also play a role in achieving spaceflight.
