Define Inertial Frame of Reference.

An inertial frame of reference is a consistent perspective in physics where objects remain at rest or move with constant velocity. No external forces are experienced.

ANSWER : An inertial frame of reference is a concept in physics that provides a consistent perspective for observing and analysing the motion of objects. In simple terms, it is a coordinate system or a set of reference points that remain at rest or move with a constant velocity relative to one another.

In an inertial frame, Newton's first law of motion holds true: an object at rest tends to stay at rest, and an object in motion tends to stay in motion unless acted upon by an external force. This means that if you are in an inertial frame and you don't experience any forces, you won't be able to tell whether you are at rest or moving with a constant velocity.

Examples of inertial frames include a person standing still on the ground, a car traveling at a constant speed on a straight road, or an astronaut floating freely in space away from any gravitational influences. In these frames, the laws of physics remain the same, making it easier to study and analyse the motion of objects without the complication of external forces.

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