+An **Inertial Frame** is a reference frame where an object unacted upon by a [force](/wiki/force) experiences no [acceleration](/wiki/acceleration). It is the fundamental backdrop where [Newton's Laws](/wiki/newton's_laws) of motion apply directly, free from fictitious forces.
+## See also
+- [Reference Frame](/wiki/reference_frame)
+- [Non-inertial Frame](/wiki/non_inertial_frame)
+- [Velocity](/wiki/velocity)
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