Science

Conservation of momentum

In this Class 9 Science topic from “How Forces Affect Motion,” students learn that the total momentum of a system remains constant when no external force acts on it. They explore momentum as the product of an object’s mass and velocity, and use this idea to understand collisions, recoil, and the motion of interacting objects. The topic helps students connect force, motion, mass, and velocity through simple observations, diagrams, and numerical examples.