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Inertia

OCR GCSE Physics A (J249) — Forces

What You Need to Know

Explain that inertia is a measure of how difficult it is to change the velocity of an object.
Define inertial mass as the ratio of force over acceleration.

OCR GCSE Physics A (J249) — Forces

Explain that inertia is a measure of how difficult it is to change the velocity of an object.
Define inertial mass as the ratio of force over acceleration.