When two bodies are approaching each other, a force comes into play between them for a finite time and brings about a measurable change in their velocities, momentum and energy according to the respective laws of conservation, a collision is said to have taken place. Collision or Impact is the interaction between two bodies during a minimal duration in which they exert relatively large forces on each other. Interaction forces during an impact are created either due to direct contact, strong repulsive force fields, or some connecting links. Learn the basics of collision in physics, such as elastic and inelastic collisions, coefficient of restitution, and conservation of energy and momentum. Find examples, diagrams, and formulas for one-dimensional and two-dimensional collisions. Collision is a brief event between objects that contact each other. The interaction between two or more objects is called a collision if there exists three identifiable stages to this interaction: before, during and after.
