Physics - NLM Question with Solution | TestHub

An inertial frame of reference is a frame that is either at rest or moving with a constant velocity, meaning it has zero acceleration.

A train slowing down to stop is decelerating, so it is a non-inertial frame.

A merry-go-round involves circular motion, which has centripetal acceleration, making it a non-inertial frame.

An aeroplane taking off is accelerating, so it is a non-inertial frame.

A bus moving with constant velocity has zero acceleration, so it represents an inertial frame of reference.

Answer: A person (driver) in a bus which is moving with constant velocity.