Noun
a coordinate system in which Newton's first law of motion is valid
Source: WordNetIn any other case the total kinetic energy has a non-zero minimum, as no inertial reference frame can be chosen in which all the objects are stationary. Source: Internet
Nowadays, UT is the observed orientation of the Earth relative to an inertial reference frame formed by extra-galactic radio sources, modified by an adopted ratio between sidereal time and solar time. Source: Internet
Physical formulation of Lorentz boosts Coordinate transformation The spacetime coordinates of an event, as measured by each observer in their inertial reference frame (in standard configuration) are shown in the speech bubbles. Source: Internet
The proper time interval would be measured by an observer with a clock traveling between the two events in an inertial reference frame, when the observer's path intersects each event as that event occurs. Source: Internet
They are correction factors that do not exist in a non-accelerating or inertial reference frame. Source: Internet
Thus, a condition necessary for the uniform motion of a particle relative to an inertial reference frame is that the total net force acting on it is zero. Source: Internet