Classical mechanics is a branch of physics that studies the motion of objects and the forces that act upon them. It is based on the laws of motion and gravitation developed by Sir Isaac Newton in the 17th century.
The main principles of classical mechanics include Newton's three laws of motion, the law of universal gravitation, and the principle of conservation of energy and momentum.
Classical mechanics deals with the behavior of macroscopic objects, while quantum mechanics deals with the behavior of subatomic particles. Classical mechanics is deterministic, meaning that it can predict the exact future state of a system, while quantum mechanics is probabilistic, meaning that it can only predict the probability of a particle's future state.
Classical mechanics is used in many fields, including engineering, astronomy, and sports. It is used to design structures, predict the motion of planets and other celestial bodies, and analyze the trajectory of objects in sports such as baseball and golf.
No, classical mechanics has its limitations and does not apply to systems that are extremely small (such as subatomic particles) or extremely fast (such as particles moving at the speed of light). In these cases, quantum mechanics and relativity must be used instead.