If the resultant of all external forces acting on a system of particles is zero, then from an inertial frame one can surely say that

Step-by-step solution

The net external force acting on a system of particles is given by the rate of change of the total linear momentum of the system, expressed as F _ ext = d P dt . Given that the resultant of all external forces is zero, F _ ext = 0 . Substituting this into the equation, we get d P dt = 0 . Integrating with respect to time, we find that the total linear momentum P of the system remains constant over time. This is the principle of conservation of linear momentum. Answer: Linear momentum of the system does not change i