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<blockquote data-quote="Ovinomancer" data-source="post: 7493725" data-attributes="member: 16814">Um, no, no it doesn't exist for everything else in the model.&nbsp; That's a big conceptual error, there. The point is that the flagpole is at rest with the city in all frames.&nbsp; That doesn't change.&nbsp; The car is not at rest with the city frame, so when you change frames, either the car is moving relative to the city frame or the city is moving relative to the car frame.&nbsp; But the flagpole remains at rest with the city regardless of the frame.&nbsp; The headwind the car experiences in the car frame is also at rest with the city -- it's blowing exactly at the same speed the city is moving in any frame.&nbsp; In the city frame, the air resistance is stationary with the city while the car moves against it.&nbsp; In the car frame, the air moves against the car with the city while the car remains motionless.&nbsp; But all of the air is moving with the city.&nbsp; When you add the wind, it creates a field effect to the right for all of that air, which is still at rest with regards to the city in the up/down direction in all frames.</blockquote>

[QUOTE="Ovinomancer, post: 7493725, member: 16814"] Um, no, no it doesn't exist for everything else in the model. That's a big conceptual error, there. The point is that the flagpole is [I]at rest with the city in all frames[/I]. That doesn't change. The car is not at rest with the city frame, so when you change frames, either the car is moving relative to the city frame or the city is moving relative to the car frame. But the flagpole remains at rest with the city [U]regardless of the frame[/U]. The headwind the car experiences in the car frame is also at rest with the city -- it's blowing exactly at the same speed the city is moving in any frame. In the city frame, the air resistance is stationary with the city while the car moves against it. In the car frame, the air moves against the car with the city while the car remains motionless. But all of the air is moving with the city. When you add the wind, it creates a field effect to the right for all of that air, which is still at rest with regards to the city in the up/down direction [U]in all frames[/U]. [/QUOTE]

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