Hello! Quantum physics and Newtonian physics are two different branches of physics. Newtonian physics is the traditional form of classical mechanics, which is based on Isaac Newton's laws of motion. It deals with the motion of macroscopic objects, such as planets and cars. On the other hand, quantum physics is a branch of modern physics that deals with the behavior of matter and energy at the atomic and subatomic level. It explains phenomena such as wave-particle duality, entanglement, and uncertainty principle. In short, Newtonian physics deals with large objects while quantum physics deals with small particles.