Identify the conditions for an elastic collision in a closed system. Check all that apply.Energy is conserved.Velocities may change.Momentum is conserved.Kinetic energy is conserved.Objects stick together after the elastic collision.One object may be stationary before the elastic collision.

In a closed system, total energy and momentum are conserved. An elastic collision also conserves kinetic energy, though the objects’ velocities may change during the collision. One object can be stationary before the collision; it does not have to be moving. Objects sticking together is characteristic of a perfectly inelastic collision, not an elastic one.

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