What is the difference between momentum and inertia?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
While related, momentum and inertia are distinct concepts:
- Inertia is the tendency of an object to resist changes in its state of motion. It depends only on mass and applies to both moving and stationary objects.
- Momentum is the quantity of motion an object has. It depends on both mass and velocity, so only moving objects have momentum.
Simply put: inertia is about resistance to change, while momentum is about the amount of motion.
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