Question

the law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system?
it increases over time
it remains the same
it eventually becomes zero
changes based on how they collide

Explanation:

The law of conservation of momentum states that in an isolated system (left alone), the total momentum remains constant as there are no external forces acting to change it.

Answer:

it remains the same