Q. If the resultant of all the external forces acting on a system of particles is zero, then form an inertial frame, one can surely say that
A) Linear momentum of the system does not change in time
B) Kinetic energy of the system does not change in time
C) Angular momentum of the system does not change in time
D) Potential energy of the system does not change in time
Explanation
(a) Since there in no resultant external force, linear momentum of the system remains constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.