1.

Explain the terms inertial and non-inertial frame of reference.

Answer»

1. Inertial frame of reference:

  • A frame of reference in which Newton ‘s first law of motion is applicable is called inertia/frame of reference.
  • A body moves with a constant velocity (which can be zero) in the absence of a net force. The body does not accelerate.
  • Example: A rocket in inter-galactic space (gravity free space between galaxies) with all its engine shut.

2. Non-inertial frame of reference:

  • A frame of reference in which an object suffers acceleration in absence of net force is called noninertial frame of reference.
  • The body undergoes acceleration.
  • Example: If a car just start its motion from rest, then during the time of acceleration the car will be in a noninertial frame of reference.


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