# If two carts collide, what type of collision will conserve both momentum and kinetic energy?

An elastic collision

Wiki: An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies after the encounter is equal to their total kinetic energy before the encounter.

Momentum is always conserved.

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An elastic collision is the type of collision that conserves both momentum and kinetic energy. In an elastic collision, the total kinetic energy of the system before the collision is equal to the total kinetic energy of the system after the collision. Additionally, momentum is conserved, meaning that the total momentum of the system before the collision is equal to the total momentum of the system after the collision. Therefore, in an elastic collision between two carts, both momentum and kinetic energy are conserved.

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