An inertial frame is a reference frame (Chapter 5) in which a force-free body keeps a constant velocity: the ground, near enough, and every frame in uniform straight-line motion relative to it.
Physics · Glossary
Physics · Glossary
An inertial frame is a reference frame (Chapter 5) in which a force-free body keeps a constant velocity: the ground, near enough, and every frame in uniform straight-line motion relative to it.