Physics is the branch of science that studies matter, energy, and the fundamental forces of nature. It seeks to understand how the universe behaves, from the smallest particles like quarks to the vastness of galaxies. Through observation and experimentation, physicists develop theories that explain phenomena such as gravity, electromagnetism, and thermodynamics. One of the key goals of physics is to formulate laws that can predict the behavior of physical systems. For instance, Isaac Newton's laws of motion describe how objects move under the influence of forces. Physics not only enhances our understanding of the universe but also drives technological advancements that improve our daily lives.