The three Newton Law’s of motion gives an explanation on how a rocket operates. The first Newton’s Law of Motion gives a description of how an object moves when it is at rest. An object at rest continues at stationary spot unless an external force acts on it. Once the object moves, it will continue in that state of motion unless stopped by another object. Newton’s principle applies to rocket movement because a moving requires no thrusting force to keep it moving in a given direction at the same constant speed. Once a rocket is in motion, it will continue moving without any propulsion because there is no friction in space to slow its motion. However, it needs some extra thrust to change the direction it is moving, speed or both.
The Second Newton’s Law of motion gives a description of the relationship between acceleration and force. An object with more mass needs more force to be applied to increase its acceleration and change the direction it is moving and speed or both. Therefore, this also applies to a rocket moving; for a rocket to accelerate, more force needs to be applied. In achieving a certain speed, it is essential to apply a little force for a long time or a larger force for a shorter time.
Lastly, the third Newton’s Law of motion states that every action comes with an equal reaction, which is opposite. In slowing down or stopping a moving object, a force needs to be applied in an opposite direction in relation to the object’s motion. Force exertion on an object results in an equivalent force of reaction in the opposite direction. Lifting of a rocket off its launch happens after the expulsion of hot gases from the exhaust vents. The action is the expulsion of the hot gases, and the reaction is the rocket moving upwards.
