What is Motion?


Motion is a state of continuous change in the physical configuration of a system. It can be either a static or a dynamic process. There are several types of motion, including Kinematics, Translational motion, and Rotatory motion. Let’s learn about each type. This article also discusses Inertia.


Inertia and motion are two fundamental concepts of physics. An object’s moment of inertia (mii) is its resistance to torque action about its axis. This quantity is usually specified in the object’s axis of rotation, measured in kilograms per square meter. It is the rotational equivalent of mass and appears in many relationship formulas for the dynamics of rotational motion.

The first law of motion states that an object will remain at rest or in uniform motion unless it is compelled to change its state of motion by a net external force. An example of this property is when an index card is placed on a glass with a penny. If the index card is moved rapidly, the penny will fall straight into the glass. The reason for this property is the inertia of rest.


The kinematics of motion is the study of how objects move. It is a branch of physics that evolved from classical mechanics. This branch of physics focuses on the motion of bodies, points, and systems. It differs from classical mechanics because it does not consider the forces that cause the motion.

Kinematics has many applications. For instance, it can be used to design machines that can move objects. Using kinematic equations, designers can design machines that know how fast they should move. If you design a robot that moves slowly, kinematics can help you figure out how fast it needs to move to accomplish a specific task.

Kinematics also examines the energy shared among interacting bodies. In Chapter 1, many examples of interactions between two bodies are discussed. These interactions occur on a single plane, where the two bodies move toward one another.

Translational motion

Translational motion occurs when all points of a rigid body move in tandem. Unlike rotational motion, which involves moving around a fixed point, translational motion only involves shifting an object’s position. It is characterized by the uniformity of its velocity, acceleration, and trajectory. The translational motion may occur in only one dimension, or it may occur in two or more.

In many cases, a block-based translational motion model works well and provides good rate-distortion performance in a low-complexity framework. An example of such a system is a football sequence. It shows high activity, but a low autocorrelation coefficient will result in poor decorrelating transforms.

Rotatory motion

Rotatory motion is a common way to explain motion characterized by a circular path. It can be seen in many common objects. For example, a clock’s pendulum oscillates about its mean position. A child swinging on a swing moves back and forth using rotation.

There are several examples of rotatory motion, such as a spinning wheel or a spinning fan. The spinning top’s body does not change position but rotates around its axis. Likewise, a door may rotate. These objects rotate because they have an axis that does not necessarily pass through them.

A spinning top is one of the most common examples of rotatory motion. It has a thread externally wrapped around its tip and spins when a force is applied to it.

Simple harmonic motion

Simple harmonic motion is a type of periodic motion. The restoring force for an object moving in a simple harmonic motion is proportional to its displacement, and the force acts towards an equilibrium position. This type of motion is often used to illustrate the behaviour of forces and their effects on an object’s motion. It is a common example of periodic motion, which is why it is an important concept in physics.

The maximum acceleration of a body in simple harmonic motion is proportional to its displacement and angular frequency. The maximum acceleration occurs when the displacement is at its largest amplitude, and the object is farthest from equilibrium. The slope of the position-time graph for simple harmonic motion is equal to the negative square of the angular frequency.