Classical physics refers to the branch of physics that deals with the study of the behavior of macroscopic objects at speeds much slower than the speed of light. It is also known as Newtonian physics or classical mechanics, as it was founded by Sir Isaac Newton in the 17th century.
Classical physics encompasses the laws of motion, the conservation of energy and momentum, and the study of forces such as gravity, friction, and electromagnetism. It describes the behavior of objects ranging from particles to planets, and is still widely used in many areas of science and engineering today.