In elastic collisions, both momentum and kinetic energy are conserved; but in inelastic collisions, only momentum is conserved.

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Quizplus · Accepted Answer

In elastic collisions, both momentum and kinetic energy are conserved, meaning the total momentum and total kinetic energy before and after the collision remain the same. In inelastic collisions, however, while momentum is still conserved, kinetic energy is not; some of the kinetic energy is transformed into other forms of energy, such as heat or potential energy, during the collision.

In Elastic Collisions, Both Momentum and Kinetic Energy Are Conserved;