Is the direction of motion of an object the direction of displacement?

If the object moves in a unidirectional straight line, then the direction of displacement of the object is the direction of velocity (motion) at any time, and if the object moves in a curve, the direction of velocity is the tangent direction of the trajectory of motion at any time, which is not the same as the direction of the total displacement.

The direction of motion of the object is the direction of instantaneous displacement, which is the direction of the tangent of the object's trajectory.

The direction of that velocity is the same as the direction of the average velocity of a very short period of time or the direction of the instantaneous displacement.

No. The direction of displacement is.

The start position points to the end position.

is fixed. is a directed line segment).

But the actual motion of the object is arbitrary.

You can walk any way.

For example, the direction of velocity at each point of the curved motion changes.

False, the direction of motion is the tangent direction of the trajectory (process quantity); The displacement is the beginning and end direction (state quantity).

No, for example, if the positive motion 1 and then the negative direction 2, his displacement is negative 1, the displacement direction is negative, but the direction of motion is not, one represents the process and the other represents the result.

All fart: the direction of displacement refers to: the straight-line distance from the starting point to the end point, and the displacement is a vector, with a magnitude and a direction; Unless the object travels in a straight line, then the direction of motion is the direction of displacement...

In special cases, the direction of displacement is the direction indicated by the line connecting the origin and the end point, and the direction of motion is the instantaneous direction of motion.

The direction of displacement is the initial position pointing to the last position.

The initial position points to the last position.

Direction of displacement: The direction is from the start point to the end point. Displacement is the change of the position of the particle, which is represented by a directed line segment connecting two successive positions, where the instantaneous T particle is located at the q point and the instantaneous T + T is located at the q point, then the vector represents the displacement of the particle in the T time interval from the T time.

It is equal to the difference between the sagittal diameter of point q and the sagittal diameter of point q, i.e., r=r(t+ t) r(t).

Direction of displacement vs. direction of velocity

The direction of velocity is not directly related to the direction of displacement, and only in a linear motion without return (i.e., moving in one direction), the direction of velocity must be the same as the direction of displacement. In addition to this, the direction of velocity may or may not be the same as the direction of displacement.

For example, throwing motion on a vertical scale.

, when the object rises, the direction of velocity (upward) is the same as the direction of displacement (upward), and the direction of velocity (downward) is opposite to the direction of displacement (upward) before falling back to the throwing point during the fall, and if it can continue to fall after passing the throwing point, then the direction of velocity (downward) is the same as the direction of displacement (downward) thereafter.

1. The reasons for influencing the direction are different:

The determinant of the direction of motion depends on the direction of velocity in the instantaneous state;

The determinant of the direction of displacement depends on the direction from the initial position to the last position;

2. The difference in time:

The direction of motion, i.e., the direction of velocity, is an instantaneous quantity (described as a quantity in an immediate state) that is related to the moment in which it is located.

The direction of displacement, which is the initial position pointing to the end displacement, is a process quantity (described as a quantity over a period of time) that is related to the time elapsed.

The relationship between the motion direction v of the dislocation, the displacement direction v of each part of the crystal and the external stress ij, the relationship between v and v is determined by the l b rule. Whether slipping, climbing, or slipping and climbing, the direction of movement of the dislocation line is perpendicular to the dislocation line.

1) Somewhere in the crystal, one or more columns of atoms are regularly misaligned.

2) It plays a decisive role in the mechanical behavior of materials (such as plastic deformation, strength, and fracture), and has a great impact on the diffusion and phase transformation processes of materials.

3) Blade dislocation, spiral dislocation, mixed dislocation. Among them, the dislocation line, the crystal slip direction, and the dislocation motion direction have a definite relationship.

The direction of displacement is not necessarily the direction of motion of the particle. The direction of the two is the same only for a linear motion with a constant velocity direction; Otherwise, for example, for curvilinear motion, the direction is not the same. For example:

In a circular motion with uniform velocity, the direction of displacement is always a chord (or diameter), and the direction of velocity is always the tangent direction of the point on the circle. The object moves in a curvilinear way, and the direction of velocity is the tangential direction of the trajectory at any time, which is different from the direction of the total displacement.

1) is a vector, with magnitude and direction.

2) The direction from the starting position to the end position is the direction of displacement.

3) The length of this vector segment is the magnitude of the displacement.

4) Obey the parallelogram rule.

For example, in a uniform circular motion, the direction of displacement is always a chord (or diameter), and the direction of velocity is always the tangent direction of the point on the circle.

Displacement is a physical quantity that represents the change in the position of an object (or particle), and the diagram of displacement is a line segment with an arrow pointing from the initial position to the last position; The so-called direction of motion refers to the direction of velocity of an object (or particle).

The change in position of a particle from one position in space to another is called the displacement of the particle during this movement. It is a physical quantity with magnitude and direction. Displacement is a vector quantity.

If an object moves from the initial position to the last position in a certain period of time, the directed line segment from the initial position to the last position is called the displacement. Its magnitude is the straight-line distance from the initial position to the last position of the moving object; The direction is from the beginning position to the last position. The displacement is only related to the beginning and end position of the object's motion, not the trajectory of the motion.

If the particle returns to its original position after a period of time during motion, then the distance is not zero and the displacement is zero.

In the International System of Units, the unit of displacement is: meter. In addition: centimeters, kilometers, etc.

The direction of velocity is the instantaneous direction of motion of the particle, and the displacement is generally a process, that is, a directed line from the starting point to the end point, so the direction of velocity is not directly related to the direction of displacement.

During translation, the direction of the object does not change and the position changes.

Translation refers to the movement of all points on a graph at the same distance in the same plane according to a straight direction, and such a graphic motion is called the translational motion of the graph, referred to as translation. **The direction of translation is not limited to horizontal.

Panning does not change the shape and size of the graphic strips. The graph is translated so that the corresponding line segments are equal, the corresponding angles are equal, and the line segments connected to the corresponding points are equal. It is isomorphic in the isolumine band lift distance, which is a type of affine transformation in affine space.

It can be thought of as the result of adding the same vector to each point, or moving the center of the coordinate system. That is, if it is a known vector, it is a point in space, translation.

Translation is the movement of any two points on the object from one point to another point in the direction and distance of the same when the object is moving; Rotation is the movement of each point at a constant distance from the same point (which can be outside the object) when the object is moving, which is called the rotation around this point, and this point is called the center of rotation of the object. So, it doesn't have to be around a certain axis.

In affine geometry, translation is the same distance that moves each point of an object in the same direction. It is isomorphic and is a type of affine transformation in affine space. It can be thought of as the result of adding the same vector to each point, or moving the center of the coordinate system.

The same point is translated twice, and the result can be represented by a single translation, so the set of all translations is a group, called a translation group.

The role and characteristics of translation:

1. Beautiful graphics can be constructed through simple translation. That is, lace, which is usually used for decoration, is a process of copying – or panning – pasting.

2. Translation is often related to parallel lines, and translation can translate an angle, a line segment, and a figure to another position, which is a scattered condition concentrated and merged into a graph, so that the problem can be solved.

3. The shape and size of the figure before and after translation remain unchanged, but the position changes.

4. The line segments connected to the corresponding points of the original graphic are parallel and equal (or on the same straight line).

5. The corresponding line segments of the new figure are parallel and equal to the original shape, and the corresponding angles are equal.

The direction of motion is the direction of velocity. is an instantaneous quantity (describing the amount of immediate state) that is associated with a moment. Whereas, the direction of displacement is the initial position pointing to the end displacement. It's a process quantity. Time-dependent.

A different concept.

The direction of motion of the object is objective, that is, the direction of motion of the object at a certain moment is something that can be marked on the coordinate axis, and the displacement of the object is based on the direction of the line rays from the starting point to the point of motion. For example, the direction of motion of a circular motion is always the tangent direction of the point, but the direction of displacement is the direction of the ray from the center of the circle along the radius.

Displacement represents a change in the position of an object (particle). Defined as: a directed line segment from the beginning position to the last position.

Its size is independent of the path, and the direction is from the start point to the end point. It is a physical quantity with magnitude and direction, i.e., a vector. The displacement of a uniform circular motion refers to a directed line segment from the starting point to the position of the object at a certain time, and the direction from the starting point to the end point.

The direction of motion is the direction of motion as the name suggests, while displacement refers to the state of change in position.

The object moves forward and then back in place, moving but displacing to zero.

The direction of motion is along the tangent direction of the trajectory, while the direction of displacement is the initial position pointing towards the end displacement.