Question

will the momentum of the system remains conserved when friction force is acting answer in yes or no with explain I will mark you as​

Answer 1

Answer:

Unless you apply an external force, the total momentum is always conserved. For instance, for the sliding of a wedge along a rough surface, you need to consider the system as the wedge plus the surface. The total momentum of both these parts should be conserved. However, it's not possible to account for the momentum of the surface, since then you need to account for the momentum of the entire planet. To avoid this, you take your system as only the wedge and you sacrifice conservation of linear momentum. You console yourself saying that the net force on the wedge is a frictional force, acting opposite to the direction of motion of the wedge. But when you think about it, the frictional force is actually a force you introduced to compensate for the momentum change of the surface.

hope it helps you........