Which one of the following persons is in an i | vedclass

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(C) An inertial frame of reference is a frame that is either at rest or moving with a constant velocity (zero acceleration).In option $A$,the train is

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

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(C) An inertial frame of reference is a frame that is either at rest or moving with a constant velocity (zero acceleration).In option $A$,the train is slowing down,meaning it has a non-zero acceleration (deceleration).In option $B$,the child is revolving,which involves a change in direction,meaning there is centripetal acceleration.In option $C$,the bus is moving with a constant velocity,which implies zero acceleration. Therefore,this is an inertial frame of reference.In option $D$,the aeroplane is taking off,which involves changing speed and direction,meaning it has non-zero acceleration.Thus,the correct option is $C$.

Which one of the following persons is in an inertial frame of reference?

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