Question

what happens to the total momentum in a system of two interacting objects when a net force is exerted upon the system? (1 point)
the total momentum is conserved.
the total momentum decreases.
the total momentum increases.
the total momentum can either increase or decrease.

Explanation:

The law of conservation of momentum states that the total momentum of a system is conserved (remains constant) if no net external force acts on the system. However, when a net force is exerted on the system, the total momentum will change. A net force can cause an acceleration, which changes the velocity of the objects in the system. Since momentum ($p = mv$) depends on velocity, a change in velocity (due to the net force) will change the total momentum. The net force can cause the total momentum to either increase or decrease depending on the direction and magnitude of the force relative to the motion of the objects. For example, if the net force acts in the direction of motion, momentum increases; if opposite, it decreases.

Answer:

D. The total momentum can either increase or decrease.