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inertial frame

 

Definitions from WordNet

Noun inertial frame has 1 sense
  1. inertial reference frame, inertial frame - a coordinate system in which Newton's first law of motion is valid
    --1 is a kind of coordinate system, frame of reference, reference system, reference frame

Definitions from the Web

Inertial Frame

Definition: An inertial frame, in physics, refers to a reference frame in which a body that is not subject to any external forces remains at rest or moves with constant velocity in a straight line.

Example: In an inertial frame, if an astronaut is floating freely in space without any external forces acting upon them, they will remain in the same position or continue to move at a constant velocity in a straight line.

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