Newton's Third Law of Motion says that for every action, there is an equal and opposite reaction.

This idea is really important for space travel, where rockets use this law to move.

Let’s break it down:

1. How Rockets Work:

   • Rockets push out gas really fast (that’s the action).
   • Because of this, the rocket moves in the opposite direction (that’s the reaction).
   • For example, a rocket can push out gases at a speed of about 4,500 meters per second.

2. How We Measure Thrust:

   • The force (or thrust) a rocket generates can be figured out using a simple formula:
     • Thrust = Mass flow rate × Exhaust velocity.
   • So, if a rocket sends out 100 kilograms of propellant every second at 4,500 meters per second, it creates a thrust of 450,000 Newtons.

3. Why It Matters:

   • This reaction helps spacecraft move around in space, where there is very little friction.
   • It shows just how important Newton's laws are for astronauts and space travel.

In simple terms, rockets work because they push gas out, and this lets them zoom around in the vastness of space!