The rocket stays at rest until it a certain force causes it to move.
That force is thrust which makes the rocket launch up into space.
The First Law states that objects without motion will stay in rest unless it is moved by force from another object.
According to "How Does a Rocket Relate to Newton's 3 Laws of Motion," stationary object remains at rest until force is applied to it. Once its set on motion, the object will continue to move at a constant speed until it hits another object.
Since the rocket has so much mass making it very heavy.
The Second Law states that an object will move depending on how much mass an object has which will lead to how much force will be needed.
The rocket is going to need lots of thrust to make it launch off to space.
According to "Newton's Laws of Motion," an Entire Rocket Ship including the Space Shuttle weighing 165,000 pounds, the External Tank weighing 78,100 pounds, and 2 Solid Rocket Boosters weighing 185,000. All of those are empty. The Boosters can hold up to 1.1 million pounds of fuel in it. All that combined equals to 2,628,100 million pounds total. The rocket needs 7.2 million pounds of force to launch into space.
The Third Law states that for every action that happens, there will always be an opposite and equal reaction.
Thrust Pushing the rocket up (Blue)
The reaction is thrust causing the rocket to lift off from earth.
Combustion going down (Red)
The rocket uses combustion as a action. Combustion goes down and creates an opposite reaction.
According to "Newton's Laws of Motion", spacecrafts fire their thruster rocket, that creates combustion and it pushes against the thruster and the thruster pushes against the conbustion. The combustion and rocket move in the opposite direction.
“Newton's Laws of Motion.” How Things Fly, howthingsfly.si.edu/flight-dynamics/newton%E2%80%99s-laws-motion.
“How Does a Rocket Relate to Newton's Three Laws of Motion?” How Things Fly, 22 Jan. 2013, 3:59, howthingsfly.si.edu/ask-an-explainer/how-does-rocket-relate-newtons-three-laws-motion.