During the impact of two objects, which statement is true?

During the impact of two objects, the statement that momentum is always conserved is true due to the law of conservation of momentum. This principle states that in an isolated system, where no external forces are acting, the total momentum before an event (such as an impact) is equal to the total momentum after the event. This is applicable regardless of the type of collision—elastic or inelastic.

In elastic collisions, both momentum and kinetic energy are conserved, while in inelastic collisions, momentum is conserved, but kinetic energy is not necessarily conserved as some of it may be converted into other forms of energy such as heat or sound. However, the overall momentum of the two-object system remains constant.

Therefore, the conservation of momentum is a fundamental principle in physics that applies to collisions, affirming that this statement is accurate in the context of impacts between two objects.