Well, it is purely a theoretical concept, one that violates the laws of physics. But in the same way that an structural engineer ignores the gravitational pull of Jupiter, as the force is negligible for all practical purposes. So when I say a "mass of zero", I mean that the mass is negligible in...
I have two simple questions:
1) What is the scientific term for "a body that cannot affect another body"?
Effectively, as if this body has a mass of zero. The body can move freely until it contacts another body, in which case it will not be able to affect the other body in any way, and thus be...