Answer :
This is a simulation of a collision in one dimension between two masses initially sliding toward each other on a frictionless surface. Explore conservation of energy and momentum, as well as elasticity and relative velocity.
For all collisions in a closed system, momentum is conserved. In some collisions in a closed system, kinetic energy is conserved. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Most collisions are inelastic because some amount of kinetic energy is converted to potential energy, usually by raising one of the objects higher or by flexing the object. Any denting or other changing of shape by one of the objects will also be accompanied by a loss of kinetic energy. And, of course, collisions between molecules are elastic if no damage is done to the molecules.
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