# Types of Kinematics: Classical, Quantum & Relativistic

• crastinus
In summary, kinematics is the study of local motion without references to its causes, such as forces or fields. There are three main types of kinematics: classical, quantum, and relativistic. It is possible to consider the local motions of objects studied in statistical mechanics, but this is not typically referred to as "statistical kinematics." It can be confusing when terms are used without proper explanation, and it is important to challenge and seek clarification from teachers. Googling the terms can also provide a deeper understanding of their meanings.
crastinus
I was taught that kinematics is the study of local motion without references to its causes (like forces, fields, etc.). That seems useful to say but perhaps it is not really that helpful.

What are the kinds of kinematics?

I can think of three kinds: classical kinematics (from mean speed to acceleration and vectors), quantum kinematics, and relativistic kinematics.

Is that right? Is there a way to consider the local motions of things typically studied in statistical mechanics? That is, does anyone talk about "statistical kinematics"?

Thanks!

crastinus said:
That seems useful to say but perhaps it is not really that helpful.
You are totally right. It's just words. If you want to find out more about what your 'teachers' meant by the term, they are the ones to challenge and there's no reason to feel bad that you are confused.

I, personally, have a big problem with things being classified with no proper explanation. The words change over the years yet the content of topics don't. It's alsmost as bad as urban slang in many ways.

Try googling the terms you are confused about and, if what you read is consistent over a number of University Course sites, then the definitions are probably OK.

## 1. What is classical kinematics?

Classical kinematics is a branch of physics that studies the motion of objects without considering the forces that cause the motion. It uses concepts such as position, velocity, and acceleration to describe the motion of objects in a three-dimensional space.

## 2. What is quantum kinematics?

Quantum kinematics is a branch of quantum mechanics that studies the motion of particles at the atomic and subatomic level. It uses mathematical equations such as the Schrödinger equation to describe the probability of finding a particle in a certain position or state.

## 3. What is relativistic kinematics?

Relativistic kinematics is a branch of physics that studies the motion of objects at high speeds, close to the speed of light. It takes into account the effects of special relativity, such as time dilation and length contraction, on the motion of objects.

## 4. How do classical, quantum, and relativistic kinematics differ?

Classical kinematics only applies to macroscopic objects and does not take into account the effects of quantum mechanics or relativity. Quantum kinematics applies to microscopic particles and uses probabilistic equations to describe their motion. Relativistic kinematics takes into account the effects of special relativity on the motion of objects at high speeds.

## 5. What are some real-world applications of kinematics?

Kinematics has many practical applications, such as predicting the motion of objects in engineering and designing vehicles and structures. It is also used in fields such as astronomy to study the motion of celestial bodies, and in medicine to analyze the movement of joints and muscles in the human body.

• Mechanics
Replies
2
Views
1K
• Special and General Relativity
Replies
25
Views
802
• Mechanics
Replies
8
Views
2K
• Introductory Physics Homework Help
Replies
30
Views
728
• STEM Educators and Teaching
Replies
4
Views
2K
• Science and Math Textbooks
Replies
15
Views
2K
• Special and General Relativity
Replies
78
Views
4K
• Quantum Interpretations and Foundations
Replies
37
Views
2K
• Quantum Interpretations and Foundations
Replies
376
Views
12K
• Science and Math Textbooks
Replies
6
Views
2K