What was Newton's First Law?

which one is right

Objects don't ever move actually.

Inertia. An object in motion will stay in motion, unless acted on by an unbalanced force; same with resting.

F=ma, the more mass, the more force is exerted.

Every action has an equal and opposite reaction.

1 answer

Inertia. An object in motion will stay in motion, unless acted on by an unbalanced force; same with resting.