The first volume of the physics course, well-known in our country and abroad. It is based on lectures given by the author for a number of years at the Moscow Physical-Technical Institute. The main attention is paid to the elucidation of the physical meaning and content of the basic laws of mechanics and concepts, establish the limits of applicability of these laws, the development of students' skills in thinking and physical ability to formulate and solve specific problems. The new edition differs from previous a few changes and additions. For students of physical and mathematical faculties of universities, physical, technical, engineering and physics institutes and universities, where the physics is the basic discipline.