Most students make mistakes when they study or talk about Kinetics and kinematics. Substantially, we note that pupils consider both terms the same because of homo pronunciation but it is wrong. Kinetics and kinematics are different and used for different purposes. In simple words, Kinetics can be defined as the branch of physics that deals with the motion of an object. Whereas, Kinematics is another system that deals with the magnitude of Speed, acceleration, etc. Both of these are branches of physics.
Kinetics is another name for Dynamics which is a branch of Physics. This branch of Physics deals with the motion of an object. In this branch, we study all the causes of motion and changes in objects due to force implementation.
The terms were coined in history because we see that whenever there is an object in motion, there is surely some force or torque behind this motion, so to study that torque or force, we have to deal with Kinetics. All types of motions by a body due to any applied forces are studied under the rule of kinetics. In this branch, we deal with some of the available quantities which are associated motion of the body, such as force, torque, etc. Kinetics is a completely theoretical or conceptual field of physics to study the causes of forces.
Hydro-power Production is fully grounded on the principle of kinetics
Windmills work due to the phenomenon of Kinetics
Our car and bikes
Missiles launching from the launcher
Kinetics is very important for a human being on earth and in space. Today, we are very advance in engineering but who forgets that in reality, all machines are working on the principle of kinetics. Every smallest to biggest innovation has used the somewhat level of kinetics physics. In our daily use, we use fans, cooler, vehicles, etc are working due to a force.
Some of the key importance of kinetics are below.
Transportation: Due to kinetics all the vehicles become able to move with the force of the engine that produces sufficient torque to make a smooth motion which helps all the buses, cars, trucks, etc to move.
Energy production: The production of electricity is wholly based on the rotation of turbines that works on the principle of kinetics. In hydro power generation plants, when water with high kinetic energy flow from high altitude to low makes turbine rotates and produces electricity.
The chemical reaction for medicines: In the field of medical science, kinetics has a vital role. In medicine invention, we make an analysis of chemical compounds based on their kinetics characteristics like how they react, why they promote the reaction, etc.
Rocket Propulsion for space: By using all the laws of kinetics, we find the best trajectory for spacecraft to reach the destination with minimum cost and securely.
Medicine injection: When we inject a suitable, drug into the body for curing, the motion of drug particles follows the principle of Kinetics to move and we also use suitable pressure in our equipment for injection in the right manner.
Kinematics is another branch of physics that also can be a sub-branch of Dynamics. This field of physics also deals with motion but here we do not work to find the causes of motion. In the study of kinematics, we learn about the various types of motion of objects and find out all the possibilities of direction, speed, and acceleration of objects in the motion geometrically.
So, we can say that in kinematics we are concerned about the way of motion of a moving body but do not focus on the cause, or why the body is moving?
In the kinematics study of a body, we make results with the help of some factors like Speed, Acceleration, and Direction instead of Force and Torque. In this field of Mechanics, we discuss the position of an object and the rate of position changing of the object in a particular direction. Moreover, in the kinematic study, the results are independent of the mass of objects.
Someone walking in the east
The bag fell from a building
A bike made accelerated from 0 to 100
A missile propelled by a warship
Motion of clock-hands
A book fell from the table
In our daily life, we travel for any purpose but we want an approximate idea of cost, distance, etc. For this analysis, we can use kinematics, in which we can consider the direction, distance, and speed of our vehicle to find out the time taken and other factors.
Day by day, human is becoming highly curious regarding interstellar traveling, for those activities we use kinematics equations to find out the required direction, and speed of our vehicle to travel safely.
In athletics, athletes use the rules and results of kinematics to make high-scoring propulsion of shot-put or javelin.
By using the laws of kinematics, we can also design the robots with suitable power, and size, and also we can operate them from a remote with the help of some calculations by kinematics equation.
| Kinetics | Kinematics |
|---|---|
Study the cause of motion | Study the nature of motion |
Study the nature of motion | Study of motion with position, speed, direction, and acceleration |
Mass of the body is important in kinetics. | No effect of the mass of body |
No use of mathematical equations | 3 mathematical Kinematics equations |
Consideration of Force | No effect of force |
Kinetics and kinematics both are sub-branches of Mechanics and also both deal with Motion of body. The main difference is that kinetics focus on the reason for motion while others told us, what is the type of motion?
Q1. List the equations of Kinematics?
Ans. Kinematics has the following equations of motion, on the behalf of those we examine the type of motion.
$\mathrm{u=v+at}$
$\mathrm{s=ut+\frac{1}{2}at^2}$
$\mathrm{v^2=u^2+2as}$
Q2. What are the types of mechanics?
Ans. There are three types of mechanics.
Classical Mechanics
Quantum Mechanics
Statical Mechanics
Q3. What is Mechanics?
Ans. Mechanics is a branch of Physics. In this branch of science, we deal with all the problems, possibilities, and causes of rest or motion of a body.
Q4. What is Quantum Mechanics?
Ans. It is a branch of physics that makes researches the nature, behavior, and motion of particles that are within the range of molecules and sub-molecules.
Q5. What is Kinetic Energy?
Ans. kinetic energy is a type of energy due to the motion of the object. The kinetic energy of an object depends on the mass and velocity of that object.
$\mathrm{K.E.=\frac{1}{2}mv^2}$
What is statistics mechanics?
Ans. It is a branch of modern physics that is used for the study and research of objects having many degrees of freedom. In this branch of physics, we learn about the importance and applications of probability theory. Moreover, in this section, we also make an analysis, of the mechanical system’s mean and average behavior.
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