25. On a rotating Earth, eastward commercial flights would never be able to reach their destinations. I.e. Earth is spinning faster than a plane can fly


“If Earth and its atmosphere were constantly spinning eastwards over 1000 mph, then the average commercial airliner travelling 500 mph should never be able to reach its Eastward destinations before they come speeding up from behind! Likewise Westward destinations should be arrived at thrice the speed, but this is not the case.”


This is a variation of proof 24.  Again Dubay does not understand relative motion.

When a westward flying plane takes off it is already travelling at the same speed as the rotating Earth,  as is the atmosphere through which it is flying …  give or take a little for local wind conditions.   The 500 mph speed that it reaches is in addition to the rotational speed of the Earth.


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