In an inertial reference frame, what is true regarding Newton's laws?

Inertial reference frames are those where an object either remains at rest or moves at a constant velocity unless acted upon by a net external force. In such frames, Newton's laws of motion hold true. This means that the laws are not just valid but are precisely formulated for these conditions, allowing us to predict the behavior of objects with a high degree of accuracy.

The statement "they are apparent and valid" reflects the understanding that, in an inertial frame, the laws of motion observed are genuine and applicable. This is foundational to classical mechanics, providing a robust framework for analyzing physical phenomena. In contrast, in non-inertial reference frames (like those that are accelerating), additional fictitious forces need to be considered, which complicates the application of Newton’s laws.

The incorrect options suggest misunderstandings regarding the scope and applicability of Newton's laws. For instance, indicating that the laws are not valid overlooks their fundamental role in classical physics. Stating they only apply to stationary objects restricts their applicability to a very narrow scenario, as Newton's laws are indeed valid for any object in uniform motion, not just those at rest. Lastly, claiming they apply only at high speeds ignores that these laws pertain to all speeds as long as the frame