Physics for IGCSE & O level - Forces And Motion (Section 1 - No. 19)
What is inertia?
The resistance of any physical object to any change in its velocity.
The force of attraction between any two objects with mass.
A measure of how fast an object is moving.
The tendency of an object to resist changes in velocity.
Uitleg
Inertia is the resistance of an object to change its state of motion.