- #1
throneoo
- 126
- 2
What is the definition of an inertial frame ? I've read that Inertial frames are reference frames in which Newton's first law applies (i.e.bodies subject to zero net external force moves at constant velocity) , however Newton's 1st law itself is only valid under inertial frames. I find it weird because that would make inertial frames circularly-defined.
some texts define it without direct reference to "Newton's 1st law", defining as "frames in which an object subject to no net external force moves in constant velocity" , but I don't think that addresses the issue at all. Are there any alternative definitions?
some texts define it without direct reference to "Newton's 1st law", defining as "frames in which an object subject to no net external force moves in constant velocity" , but I don't think that addresses the issue at all. Are there any alternative definitions?