Collisions refer to the study and analysis of interactions between objects or particles that result in an impact or transfer of momentum and energy. This research area is commonly studied in the fields of physics, engineering, and materials science to understand the dynamics of collisions and their effects on the objects involved. Researchers often investigate various aspects of collisions, such as the conservation of momentum and energy, collision forces, deformation of materials, and the resulting damage or injury. Collision research plays a crucial role in areas such as automotive safety, structural engineering, and particle physics.