I have been researching more about rockets In a book called, “The Encyclopedia of Knowledge“ when I came across the answer to one of my sub questions. What role do physics have on rockets. Based on what I have read, I now know that they have a huge role on rockets. Let’s start with Newton’s first law. Just in case you are not familiar With newtons laws I will right them out.
Newton’s first law:
All things will either stay still or move with a steady speed unless a force acts upon it. This idea is called inertia.
This is how the first law contributes to rocket. When a rocket sets on the launch pad with it’s engines switched off, there’s no overall force acting on it. Inertia keeps it in place so it goes nowhere.
Newtons second law:
When a force acts on something it makes it accelerate. To go faster, slower, or change direction.The bigger the force, the lighter the object the more it accelerates.
This is how the second law of motion contributes to the rocket, The main engines and booster rockets fie out hot gas. This creates a huge downward force that accelerates the rocket upward. In other words the engine is a force that makes the rocket accelerate upwards. The third law of motion also has a big role in this.
Newtons third law:
For every action there is always an equal and opposite reaction.
Newtons third law contributes to rockets perhaps the most out of the three laws. When I say action I really am talking about force. So when the engines burst out exhaust gas pointing down, there is an equal and opposite reaction, wich is the rocket accelerating upwards.
Newtons laws truly play a huge role in getting the rocket off the ground.
