Physical meaning
In physics, when an object moves from fast to slow, from slow to fast or from static to motion (the speed of the object changes), when the object turns left or up (the direction of the object's motion changes), we say that the motion state of the object changes.
Relation between motion state and force:
Force is the reason for changing the motion state of an object, and force is not the reason for maintaining the motion of an object.
Force can change object The movement state of. For example, if you push the box hard, the pushing force will make the box happen displacement , the thrust will change the motion state of the box. The car brakes to slow down, friction If the speed of the car is reduced, the friction will change the state of the car. Note: The force can only change the movement state of the object, not the movement state of the object will change as long as the object is subject to the force.
