State Newton’s First Law. You can paraphrase, or quote and include a citation:
Newton's First Law, also known as the law of inertia, states that an object at rest will stay at rest and an object in motion will continue moving with a constant velocity unless acted upon by an external force. This can be paraphrased as an object will maintain its current state of motion (either at rest or in motion) unless some force is exerted on it to change that state.
One possible citation for quoting Newton's First Law is:
"Every body persist in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by force impress'd." (Newton, I., 1687)
Newton's First Law, also known as the law of inertia, states that an object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction, unless acted upon by an external force.
Paraphrased: "An object will continue its current state of motion (either at rest or moving at a constant velocity) unless an external force acts upon it."
Citation:
Newton, I. (1999). Mathematical principles of natural philosophy. University of California Press.