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Consider a reference frame associated with a free falling cabin, which is moving with an acceleration of g = 9.8m/s^2. At time t=0 the cabin is at rest. An object in an outer space (so that no forces act on it) is moving initially with a constant velocity relative to the cabin.

A. Will this object continue moving with a constant speed relative to the cabin?

B. Is this reference frame inertial?

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