What core concept in physics did Galileo formulate that described the tendency of an object in motion to continue moving?

Answer

Inertia

Galileo formulated the concept of inertia, which states that an object in motion tends to stay in motion unless an external force acts upon it, a crucial abstraction derived from observing rolling balls.

What core concept in physics did Galileo formulate that described the tendency of an object in motion to continue moving?

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