A-LevelPhysicsDynamics9702/12 · Oct/Nov 2025 · Q91 Mark

What is a statement of the principle of conservation of momentum?

AIn an elastic collision, momentum is constant.

BMomentum is the product of mass and velocity.

CThe force acting on a body is proportional to its rate of change of momentum.

DThe momentum of an isolated system is constant.

✓ Correct answer

D: The momentum of an isolated system is constant.

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