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Acceleration: The rate at which the velocity of an object changes with time.

Force: A physical interaction (pushing or pulling) tending to change the state of motion (velocity) of an object.

Inertia: The tendency of an object to continue in its state of motion.

Mass: A measure of an amount of matter.

Velocity: The rate at which the position of an object changes with time, including both the speed and the direction.

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