"Physics-based" refers to approaches or models that rely on the principles of physics to explain or predict phenomena. This can include simulations, algorithms, or designs that utilize fundamental laws, such as Newton's laws of motion or thermodynamics, to create accurate representations of real-world systems. In various fields, such as engineering, computer graphics, and robotics, physics-based methods help in understanding how objects interact and behave under different conditions. By applying these principles, developers can create more realistic animations, improve the performance of machines, and enhance the safety and efficiency of structures.