Classical Mechanics

Classical mechanics is the branch of physics that deals with the study of motion and the forces that cause it. It is concerned with the behavior of macroscopic objects, such as balls, cars, and planets, and how they move under the influence of external forces.The principles of classical mechanics were first formulated by Sir Isaac Newton in the 17th century and are often referred to as Newtonian mechanics. These principles include three laws of motion that describe how objects move when acted upon by external forces. The first law, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue to move at a constant velocity, unless acted upon by an external force. The second law states that the force acting on an object is proportional to its mass and the acceleration it experiences. The third law states that for every action, there is an equal and opposite reaction.Classical mechanics also includes the study of other phenomena, such as the conservation of energy and momentum. The principle of conservation of energy states that energy cannot be created or destroyed, but can only be transferred or transformed from one form to another. The principle of conservation of momentum states that the total momentum of a system remains constant, unless acted upon by an external force.Classical mechanics provides the foundation for many other areas of physics, including thermodynamics, fluid mechanics, and electromagnetism. It is also important in engineering and technology, as it provides the basis for understanding how objects move and how they respond to external forces.

Units and Measurements

Physics is all about measuring and quantifying physical phenomena. The International System of Units (SI) is the standard system of measurement used in physics. You will need to be familiar with units such as meters, kilograms, seconds, and so on.

Kinematics

The study of the motion of objects without considering the forces that cause the motion.

Dynamics

The study of the motion of objects in response to forces.

Newton's Law of Motion

Newton's laws of motion are a set of three fundamental laws that describe the relationship between forces and the motion of objects. 

Work and energy

Work is the transfer of energy from one object to another, or from one form to another. Energy is the ability to do work. The relationship between work and energy is described by the work-energy theorem, which states that the work done on an object is equal to the change in its kinetic energy.

Conservation laws

Conservation laws are fundamental principles in physics that state that certain properties, such as energy and momentum, are conserved in a closed system. The law of conservation of energy, for example, states that energy cannot be created or destroyed, only transferred from one form to another.