Interpret inertial mass as a measure of how difficult it is to change an object's velocity.

In the subtopic Newton's laws of motion, this learning objective focuses on interpret inertial mass as a measure of how difficult it is to change an object's velocity. For AQA GCSE Physics 8463 Unit 4.5 Forces, keep the explanation inside Newton's laws of motion and Forces and motion. Approved keywords for this objective include mass and inertia. A strong answer separates mass and weight, uses correct units where quantities are involved, and links the physical reasoning back to interpret inertial mass as a measure of how difficult it is to change an object's velocity. This is not a generic revision point: it is specifically about Newton's laws of motion, Forces and motion, and the approved wording of the learning objective.