What is the concept of Newton s three laws?

Newton's Three Laws.

Newton's three laws are important laws in mechanics, and they are the basis for the study of classical mechanics.

1 Newton's First Law.

Contents: Any object remains at rest or in a uniform linear motion until it is forced to change this state by the forces of other objects.

Explanation: Objects have a tendency to maintain rest and move in a uniform linear line, so the motion state of the object is determined by its motion speed, and its motion state will not change without external force. This property of an object is called inertia.

So Newton's first law is also known as the law of inertia. The first law also clarifies the concept of force. It is clarified that force is the interaction between objects, and it is pointed out that it is force that changes the motion state of objects.

Because acceleration describes the change in the state of motion of an object, force is related to acceleration, not to velocity. If you don't pay attention to this in your daily life, you will often have a false impression.

Note: Newton's first law does not hold true in all frames of reference, in fact it only holds in inertial frames of reference. Therefore, Newton's first law is often used as a criterion for whether the frame of reference is an inertial frame of reference.

2 Newton's second law.

Contents: The object will produce acceleration under the action of the resultant external force, and the direction of acceleration is the same as the direction of the resultant external force, and the magnitude of the acceleration is proportional to the magnitude of the resultant external force and the inverse proportion of the inertial mass of the object.

The second law quantitatively describes the effect of the force acting on and quantitatively measures the magnitude of the inertia of an object. It is vector and is an instantaneous relation.

It should be emphasized that the combined external force on the object will produce acceleration, which may change the motion or velocity of the object, but this change is related to the motion state of the object itself.

In a vacuum, since there is no air resistance, various objects have the same acceleration regardless of their mass because they are only subjected to gravity. Therefore, in free fall, their velocity changes the same in the same time interval.

3 Newton's Third Law.

Contents: The action and reaction forces between two objects, on the same straight line, equal in magnitude and opposite in direction.

Note: To change the motion of an object, other objects must interact with it. The interaction between objects is manifested through force.

He also pointed out that the action of force is mutual, and there must be a reaction force. They act on the same straight line, equal in size and opposite in direction.

Also note:

1) There is no priority or priority between action and reaction forces. Creates and disappears at the same time.

2) This pair of forces acts on different objects and cannot be counteracted.

3) The action force and the reaction force must be forces of the same nature.

4) Nothing to do with the frame of reference.

1.Law of Inertia: Any object will maintain its original state of motion if it is not subjected to an external force.

2.The Law of Acceleration: If a physical entity is subjected to force, it will produce acceleration, and the specific formula is f=m a

3.The law of action and reaction: that is, if you punch someone else, you yourself are actually affected by the force of that punch.

Newton's First Law: The Law of Inertia – All objects always remain in a state of uniform linear motion or at rest, unless a force acting on it forces it to change this state!

Newton's second law – the magnitude of an object's acceleration is directly proportional to the force it is subjected to, inversely proportional to its mass, and the direction of acceleration is the same as the direction of the force! f＝ma

Newton's third law – The forces acting and reacting of two objects are always equal in magnitude and opposite in direction, acting on the same straight line

I just found it in a textbook, forget, thank you.

The three laws of Newtonian mechanics are: the law of inertia, the law of acceleration, and the law of action and reaction.

1. The law of inertia.

Any object remains at rest or in a uniform linear motion until it is forced to change this state by the forces of other objects.

2. The content of the law of acceleration.

The object will produce acceleration when it is subjected to the action of the resultant external force, and the direction of the acceleration is the same as that of the resultant external force, and the magnitude of the acceleration is directly proportional to the magnitude of the resultant external force and the inverse proportion of the inertial mass of the object. The law of acceleration quantitatively describes the effect of force action and quantitatively measures the magnitude of inertia of an object. It is vector and is an instantaneous relation.

3. Force and reaction.

The force and reaction force between two objects are equal in magnitude and opposite in the same straight line.

Introduction to the proposer of Newton's three laws

Isaac Newton was a great British mathematician, physicist, astronomer, and natural philosopher whose fields of study included physics, mathematics, astronomy, theology, metaphysics, natural philosophy, and alchemy.

In mechanics, Newton clarified the principle of conservation of momentum and angular momentum and proposed Newton's laws of motion. Optically, he invented the reflecting telescope and developed a theory of color based on the observation that a prism diverges white light into the visible spectrum. He also formulated the law of cooling in a purely idiomatic way and studied the speed of sound.

In mathematics, Newton shared the honor of developing calculus with Gottfried Wilhelm Leibniz. He also proved the generalized binomial theorem, proposed the "Newtonian method" to approximate the zero point of a function, and contributed to the study of power series.

In the study of economics, Newton proposed the gold standard.

The action and reaction forces between the two interacting objects are always equal in magnitude and opposite in direction, acting on the same straight line. Newton's third law of motion and the first.

The first and second laws together constitute Newton's laws of motion, which expound the basic laws of motion in classical mechanics.

The content of Newton's three laws is:

1. Newton's first law of motion, referred to as Newton's first law, is also known as the law of inertia and the law of inertia. Contents: Any object must remain in a uniform linear motion or at rest until an external force forces it to change its state of motion.

The first law explains the meaning of force: force is what changes the state of motion of an object. The second law states the effect of force:

The force causes the object to gain acceleration.

2. Newton's second law of motion: the acceleration of an object is proportional to the force, inversely proportional to the mass of the object, and proportional to the reciprocal of the mass of the object; The direction of acceleration is the same as that of the applied force. The second law states the effect of force:

The force causes the object to gain acceleration.

3. Newton's third law of motion: The force and reaction force between two interacting objects are always equal in magnitude and opposite in direction, acting on the same straight line. The third law reveals the nature of force: force is an interaction between objects.

Newton's three laws are important laws in mechanics, which are the basis for the study of classical mechanics. Newton's first law (also called the law of inertia); Newton's second law (also known as the law of acceleration); Newton's third law (also known as the law of action and reaction).

Newton's laws of motion are based on absolute space-time and the corresponding transceding action. Qiao's so-called over-distance interaction means that the separated objects do not need any medium and no time to transmit the interaction between them, that is to say, the interaction is transmitted at an infinite velocity.