Which situation best represents the law of conservation of momentum?

Explanation

The correct answer is (C) Recoil of a rifle after firing Explanation: • According to the law of conservation of momentum, in an isolated system, the total momentum remains constant. • When a bullet is fired, the forward momentum of the bullet is balanced by the backward momentum (recoil) of the rifle. Information Booster: • Momentum ($p$) is the product of mass ($m$) and velocity ($v$). Additional Knowledge: • Vehicle stopping (Option B): Momentum is not conserved for the vehicle alone because external friction force acts on it. • Falling object (Option A): Gravity is an external force that changes the object's momentum.