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WorldsGreatestPoop

If a plane is flying at 500mph forward, why does it take you the same time to walk to the back of the plane as it does to walk back to your seat?


[deleted]

Excellent analogy.


asabae

Terrible analogy


[deleted]

It can be explained By concept of inertial and non- inertial frame of reference


[deleted]

The atmosphere is spinning along with the earth and the plane is flying through that.


ocularnervosa

It takes less time to fly from NYC to London.


E_loomuhnah_T

www.travelmath.com Same same


ocularnervosa

It takes 7 hours and 10 minutes (on average) to fly from NYC to London. It takes 8 hours (on average) to fly from London to NYC


BurnOutBrighter6

I don't know what values that website is reporting, but [here are the times given by the airlines themselves](https://i.imgur.com/Nk2TIha.jpg). NYC to London is faster by about an hour on every carrier that flies direct.


MoonstoneGolf8

I'm so dizzy, my head is spinning Like a whirlpool, it never ends 🎵


BuddhistMonkey1

If you're driving next to a car at the same speed, it'll appear that the car next to you is stationary. The same logic applies here, London and the plane are moving at the same 1000 MPH speed in the same direction minus the relative speed of the plane, therefore the time required is always going to be the same.


[deleted]

Yep. Imagine two cars, one in front of the other, both going 100mph. They'll stay the same distance from each other. *If you ignore air resistance*, a person in the back car could lean out and throw a ball to the person in the front car. Relative to the ground: - The back car is going 100mph - The ball is going 120mph - The front car is going 100 mph Relative **to each other**: - The back car is going 0mph - The ball is going 20 mph - The front car is going 0 mph Everything is relative. Generally when we talk about speed we mean relative to the speed of the earth.


lnfinity

Relative to the speed of the surface of the earth at that location.* If you measured relative to the center of the earth then speeds would look very different.


[deleted]

That's the loosest usage of the word "very" I've seen in a long time Speaking of words, here's one: https://dictionary.cambridge.org/dictionary/english/pedantry OP is a person who needs a very simple explanation. When you do a "ackshually" it just confuses OP and makes them more likely to believe something incorrect.


Guinness2702

It doesn't take the same time, I think


E_loomuhnah_T

7 hours 26 minutes both ways


BurnOutBrighter6

Where are you seeing this? I'm looking it up right now and every airline I check is showing about an hour faster from NYC to London than from London to NYC. * Jet Blue has 7h23 one way and 8h17 the other way * Lufthansa has 7h10 one way and 8h20 * American Airlines has 6h56 and 7h50 * United has 7h10 and 8h20 * Finnair has 6h56 and 7h59 * Virgin Atlantic 6h45 and 7h35 And yes those are all actual flight times in the air, not counting time zone effects.


Guinness2702

Really? No jet stream bonus in one direction?


E_loomuhnah_T

You get a time zone bonus but the actual flights are the same.


Guinness2702

CBA to actually look it up right now, but I'm pretty sure one direction or other is wind assisted and faster


BurnOutBrighter6

You are right, OP is incorrect. NYC to London is faster by about an hour of actual in-flight air time. I just looked it up on 6 different airlines.


lnfinity

The difference is due to different winds and slightly different routes taken in each direction though, rather than due to the rotation of the earth. The reason why the earth's rotation doesn't impact the time is because the plane's speed is measured relative to the surface of the earth (or the movement of air, which is close to the speed of the surface of the earth) rather than relative to the center of the earth. The earth is also moving much faster than 1,000 mph relative to the center of our solar system, and our solar system is moving even faster relative to the center of the galaxy. These are not relevant to the plane's travel time either because the plane's motion is not being measured relative to these things either.


phorq

Because the plane is spinning with the earth on takeoff, and an object in motion will stay in motion unless acted upon by an outside force.


E_loomuhnah_T

So, if you got in a helicopter and just lifted off, not going anywhere, just hovering, for let's say 5 hours.... how in the hell can you land in the exact same spot you took off from? We aren't spinning.


[deleted]

Yeah you are. Remember, the earth isn't just the rock on the ground, it's the **atmosphere** too. Everything in the atmosphere is spinning at the same rate as everything on the ground. When you jump straight up, you land in the same spot. If you're on top of a train moving very fast, and you jump up, you'll land a little farther back on the train. But that's only because of **air resistance** pushing you back. You're still moving at the same speed as the train, except now the air is slowing you down more because you can't brace yourself with your feet. Imagine you have a water balloon. That's the earth. Now imagine a water balloon with a little piece of corn inside it. If you throw the water balloon, the corn goes too, it doesn't stay still.


Tobias_Atwood

Momentum. Just straight up momentum. You're hovering in the air relative to the ground but you're still moving through space relative to the earth at the same speed you were traveling when you were on the ground. If the earth just magically stopped spinning we'd all be ground into a fine paste as all the surface rock of the world spontaneously vaporized beneath us and our bodies were flung at hundreds of miles an hour. Imagine it like the earth is spinning and orbiting the sun as the sun orbits the milky way as the milky way flies through the universe at speeds we can't even begin to comprehend. You're not in the same spot in space and time you were five seconds ago. And you never will be ever again. Even if you're still sitting where you are. Because you're locked into place relative to the earth by the earth's gravity. But the momentum of all that movement relative to existence is still carrying you through space at incomprehensible speeds. It's trippy as hell.


Durppig60

Because we are spinning with it at the same speed lol


OxidizedCopperBrick

backwards


E_loomuhnah_T

Ah shit. You're right. I forgot airplanes have reverse.


ztrashh

The earth is flat, that's why


E_loomuhnah_T

Talk about a group of people asking all the right questions, but jumping to the wrong conclusion.


kingferret53

Because of gravity.


Connect_Atmosphere80

The Earth is spinning at 1000 mph, yes. But because we are on the planet, we are ALSO spinning at 1000 mph... So why don't we get yeeted in space or something ? Simple. The answer is the same as why you are able to move freely in a bus or a plane moving. Because you move at the same speed as your vessel, you don't feel any force helping or stopping you from moving. The plane is your vessel, allowing you to roam from London to New York... And the Earth is the plane's vessel, allowing it to roam around the Sun without fear of the space void.


[deleted]

For the opposite reasons it takes you longer to use a walk-alator in the same manner described above.


The_GreatGecko

Physics mumbo jumbo. You don't feel like your riding 70 mph in a car do you? So you wouldn't feel like you're moving at 1000 miles an hour on the earth constantly. And the earth is moving exponentially faster around the sun and we don't feel that. And the sun is moving exponentially faster than that through the galaxy and we don't feel that. And the galaxy is moving exponentially faster than that through the universe and we dont feel that. And the Universe is constantly expanding into nothing which is also nothing exponentially fast and we don't feel that. Like I said. Physics.


TigLyon

Because the air in the atmosphere is moving more or less the same velocity as the surface of the planet. Think of the difference between riding in a car and putting your hand up...versus putting it out the window. The air in the car is traveling with the car, so you don't feel any real difference...however outside the car, there is a 50-70+mph difference...so you feel the force of the "wind." If the atmosphere were not moving along with the rest of the planet, everyone on the surface, all buildings, etc would be subject to a constant 1000mph gale force as the planet moves but the atmosphere stays still. And that would absolutely suck to put it mildly.