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inertia

The Law of Inertia
Image: iStockphoto.com/zergkind

The Law of Inertia

On Earth, it may seem that moving things always slow down sooner or later. But they don't. Unless acted on by some outside force, moving things keep on moving FOREVER, while non-moving things remain at rest.

Explore inertia, the resistance of an object to changing its state of motion, with astronauts, acrobats, athletes, hyperactive puppies, and a flying worm.

European Space Agency

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