JEE Main Physics question

For ordinary terrestrial experiments, the observer is in an inertial frame in which of the following cases?

(A)A child revolving in a giant wheel
(B)A driver in a sports car moving with a constant high speed of 200 kmh⁻¹ on a straight roadCorrect
(C)The pilot of an aeroplane which is taking off
(D)A cyclist negotiating a sharp curve

Answer: (B)

Solution

An inertial frame is one with zero (or negligible) acceleration. A car moving at constant velocity on a straight road is

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Question ID VK-153238