1. The problem is to define the term "physics."\n\n2. Physics is the branch of science concerned with the nature and properties of matter and energy.\n\n3. It studies phenomena such as motion, force, energy, matter, heat, sound, light, and the composition of atoms.\n\n4. Physics uses mathematical models and experiments to understand how the universe behaves at both macroscopic and microscopic levels.\n\n5. In simple terms, physics explains how things move, interact, and change in the natural world.