Question

Assertion- The momentum of an isolated system remains conserved Reason-No external force act on an isolated system​

Answer 1

:

Both Assertion and Reason are correct but Reason is not the correct explanation ... As the external force is zero on system it's momentum remains conserved

Answer 2

Answer:

The momentum of an isolated system of particles is conserved. The forces are internal in nature and sums up to zero for entire system. As the external force is zero on system it's momentum remains conserved.