Is there a velocity in the process of action of force?

Within the framework of Newtonian mechanics, it can be considered that the process of action of force has no velocity, that is, it is over-distance.

However, in the environment of large scale and high velocity, the overdistance theory of force is not applicable, and Einstein proposed the theory of relativity. One of the two basic principles is that the speed of light is unsurpassable to the observer.

So you're right.

The propagation of force takes time.

The gravitational pull between the sun and the earth doesn't seem to take time to propagate.

The speed of gravitational waves is equal to the speed of light.

Let's imagine an infinite length of rope with one end in your hand, the rope is straight up, do you pull the rope hard and stay in the air for t time until the force is transmitted to the other end?

So how do you explain the phenomenon of inertia?

In my humble opinion, there is a limit to the speed at which force can propagate.

The velocity of the object is 0 when it is subjected to static friction, I don't know if it counts as no velocity, and in addition, in the classical mechanics Newton's law of the object in the ideal state, due to inertia to do uniform motion, "this shows that the velocity itself has nothing to do with the force." Einstein said this, but after he proposed the theory of relativity, he said that the motion of objects due to inertia is due to the action of inertial forces.

The ghost is not, and it is known that the speed of the field force is the speed of light. If the sun disappears at this point, it will not be out of gravity until the last beam of light reaches the earth.

The force passing through space should be the speed of light.

No, the conduction of force is instantaneous.

The action of force takes time, time = speed of light distance.

The action effect of force is one of the basic concepts in elementary mechanics. The effect of force is that it can change the shape of an object (deformation for short), and it can also change the motion state of an object.

It is customary to refer to the magnitude, direction, and application point of force as the "three elements of force". A diagram of a force can be drawn based on the three elements of a force.

Relevant factors:The effect of the force is related to the magnitude of the force;

The effect of the force is related to the direction of the force;

The effect of the force is related to the point of action of the force.

The action of force takes time, time = speed of light distance.

The action of the force within the scope of human perception.

The time is too short. In general, it is believed that the action of force does not take time.

Follow-up question: So what is the most fundamental velocity of the universe? ：

The expansion process after the big ** is a kind of gravitational force and repulsion dispute, and the power generated by ** is a kind of repulsive force, which makes the celestial bodies in the universe continue to be far away; There is a gravitational attraction between the celestial bodies, which prevents the celestial bodies from moving away and even tries to bring them closer to each other. The magnitude of gravity is related to the mass of the celestial body, so the final destination of the universe after the big ** is to continue to expand, or will eventually stop expanding and shrink and shrink in turn, it all depends on the density of matter in the universe Question: According to what you said, the universe comes from the singularity, and the repulsive force of ** keeps the celestial bodies away, so the speed is still generated by the force:

Yes, the understanding of hitting one is limited to middle school textbooks. The second one goes deeper and explains the question: But isn't it a contradiction that Newton's law says that force is the cause of changing the state of an object, not the cause of maintaining its motion, so it is not the force that produces the velocity?

Not contradictory. As it says within the middle school range:

The force causes the object to produce acceleration and changes the state of motion of the object. In the view of humor, an object can remain stationary on its own or move in a straight line at a uniform speed.

Force is the action of an object on an object, so the forces all come in pairs. There is force and force. The force generated by the interaction between two objects through different forms, such as attraction, relative motion, deformation, etc., is called the force.

Two versions: The law of action and reaction is further divided into two versions: strong and weak.

Here, the third law states the "law of weak action and reaction". The "law of strong action and reaction", in addition to the law of weak action and reaction, also requires that both action and reaction act in the same straight line.

Both gravitation and electrostatic forces obey the law of strong action and reaction. However, in some cases, the action and reaction forces are not in the same line (the line connecting the two points of action).

For example, two electric charges in translational motion have the same translational velocity, but are not perpendicular to the line connecting the two charges, and the action and reaction forces calculated by the Biot-Chavar point charge law and Lorentz force law are not in the same line. This force only obeys the law of weak action and reaction.

For example, if two electric charges moving in translational motion are moving perpendicular to each other, the electromagnetic force they each feel does not obey the law of weak action and reaction.

Pairing power in pairs:

According to the third law, a force is an interaction between objects, and the force must appear in pairs: one of the forces is called the "acting force"; The other force is called "reaction force" (Latin translation of actio and reactio), also known as "resistance"; The magnitude of the two forces is equal and the direction is opposite.

The distinction between them is purely arbitrary; Any force can be considered as an acting force, and its corresponding force naturally becomes a concomitant reaction force. This pairwise action and reaction force is called "pairing force" or "third law pairing force". The third law is also known as the "law of action and reaction".