Are there any kinds of situations in which the momentum of a moving system is not conserved?
A) No, because the momentum of any system is always conserved.
B) Yes, if there is friction acting between different parts of the system.
C) Yes, if some of the parts of the system collide with each other.
D) Yes, if any part of the system is acted upon by forces external to the system.
E) No, because the law of inertia demands that any moving system must keep moving.

Question

Quizplus · Accepted Answer

Momentum is conserved in a system only when no external forces act on it. If external forces are present, they can change the momentum of the system.

Are There Any Kinds of Situations in Which the Momentum