Question

which best describes the final total momentum of both the carts compared to the initial total momentum? it is less if cart b has a smaller mass. it is greater if cart b has a greater mass. it is the same if no external forces are added. it depends on the masses of cart a and cart b.

Explanation:

According to the law of conservation of momentum, total momentum is conserved in the absence of external forces.

Answer:

It is the same if no external forces are added.