Physics simulation is a technology that replicates real-world physics on computers, incorporating elements such as mass, velocity, friction, and gravity through mathematical equations to simulate the movement of objects. This technology is widely used in game development, computer-generated animation, and scientific simulations. Key components of physics simulation include collision detection, which identifies when objects touch; dynamic simulation, which reproduces the overall movement of objects; rigid body simulation, which calculates the motion of non-deformable objects; and soft body simulation, which handles the movement of deformable objects. Examples of physics simulation in action include the falling of objects due to gravity, collisions and rebounds, and changes in sliding due to friction. The software that performs these simulations is known as a physics engine, often provided as middleware libraries integrated into game development and CG production software. The benefits of using physics simulation include the creation of realistic movements, reducing the manual effort required for animation, and visualizing complex physical phenomena. This technology has become essential in computer graphics and game development for producing more lifelike and natural movements.