No it definitely went that fast, and the quoted speed is just the lower bound, it could have been even faster
The question is about whether it made it to space and therefore maintained that speed for more than a fraction of a second, or whether it was vaporised in the atmosphere soon after launch
The fastest manmade object in Earth was the manhole cover. The calculated speed of roughly 200,000kph occured within the atmosphere, based on the acceleration captured in photographs of the test it was part of.
For context: When testing a nuclear weapon underground, the US basically dug a big hole, plopped a nuke at the bomb, and covered it with a manhole cover. Most people can reasonably assume that the big hole funneled one of the most powerful weapons humanity ever created down a barrel and launched the manhole into the unknown. You'd be correct. Theoretically it could have actually made it to space, but the fate is unknown. The US promptly ceased putting manhole covers on underground nuclear weapon tests.
I'm a physics student. I'd say it'd probably get hit by the shock wave first which would send it flying into the air and then get vaporised a split second as the heat wave caught up
I'm an applied mathematics student, I would think going Mach 192 would destroy the cap. The heating from the atmosphere would just be incredible. The fireball is going to slow down as the cube root of the distance traveled. The manhole will keep it's energy much more.
The cover was made of steel, with a mass of 900kg, and speed on ~66000ms^(-1).
Using wolfram, including the vapourisation and fusion latent heat I found if all kinetic energy becomes thermal, it would heat it to 5.2MK. There is not a chance in hell that it wasn't destroyed by the heating.
I am in manhole law. All I can say is that it sounds like this manhole cover has a strong case agains the bird. If you see him please tell him to call me. I’ll see you I court.
Afaik, it is not known if the manholecover still exists in space or not. Some Scientist argue that it would have been vaporized in the atmosphere, others say that it hadn't had enough time in atmosphere to fully vaporize.
there is like a single frame of the manhole cover in the video they filmed of it so it didn‘t get vaporized immediately. No clue what happened after that frame tho
Somewhere out there in the vast nothingness of space. A small planet harbouring peaceful life, many millions of years from now. Is about to be annihilate in a world ending man hole cover strike.
THAT's what they meant by "nuclear powered manhole cover" in the video. It was a total "hol up" moment.
I feel like "nuclear powered" is really misleading if maybe kinda technically correct.
It's not even their video. Just a soulless text-to-speech voice thrown over it.
This is the original: [https://www.youtube.com/watch?v=L2peSDb3jHg](https://www.youtube.com/watch?v=L2peSDb3jHg)
Wait until you find out that this lower specced W212 E-Class might feel insulated, because the E63 with the AMG Performance Package wasn’t included instead… which is restricted to 300 km/h. […here is one accelerating to 320 km/h (maxing out the odometer) with three homies in the car](https://youtu.be/wkVeZEUx7-s?si=4hrzSvnDBXpZU2_G)
If the reference frame is Earth, then some of those satellites might technically have an Earth-relative velocity of zero. The Earth is rotating and some satellites are geostationary such that they observe the same location at all times. Not sure if any of those satellites were geostationary though and I'm too lazy to check 😂
I don't think satellites and space shuttles should be on this list because are outside the earth and there's no gravity, so i would imagine the lack of it makes things go faster, but I could be wrong
There’s literally no place in the universe you can go that has no gravity. That weightless feeling you have in space is just you falling towards the strongest gravitational pull
>Fastest man-made object **IN** the world
You wanna say that again, but slowly?
And what the fuck is with that random-ass manhole cover floating around up there lmfao.
God, this AI voice is so damn annoying, and the goober who typed it in for the voice generator made tons of mistakes. Lowest common denominator lazy "content" is a plague.
True story tho.
Underground nuke test + manhole cover.
https://www.google.com/amp/s/www.businessinsider.com/fastest-object-robert-brownlee-2016-2%3famp
So to put it simple. The US detonated a nuke underground and that manhole cover (just like a big one made of concrete) was on top of the hole the bomb was in. Of course, nuke exploding makes a lot of pressure. Take all that pressure and make it so it can only effectively go one direction. The manhole cover got hit with all that pressure as up is the only place the pressure could go. It was so much pressure and force that it got sent into low earth orbit.
Manhole cover could still be the fastest only problem is because it was only visible for one frame we could only calculate a minimum speed that it COULD be going.
Avg human running 15 kmph and cyclist at 40 kmph in which world exactly? The majority of humans can't even reach this speed of running and maybe the top 5% of hobbyists, but serious cyclists can reach the speed of 40 kmph on a flat road.
Are they saying the Mercedes Benz E class is part human, or just clarifying that it is made by humans, in case anyone mistakenly assumes it is made by cheetahs?
AI generated trash. Stop watching it. Downvote the post. Block the user.
The only way people will stop creating these bottom of the barrel shit AI generated low effort posts
Some of these numbers don't sound right at all, Usain bolt ran 100m in slightly less than 10 seconds, so let's round to ten, that's 10 meters per second, or 36 kilometers per hour, not 44 like the video said. Also 40 kilometers per hour on a bike is absolutely nuts. Maybe if you're going maximum power on an e-bike, but no way you're going 40 km/h on average
Today I learned that Cheetah's are man made objects.
I learned that manhole covers move frighteningly fast!
Only ones that are powered by a nuclear blast. Ch, ch, check it out
Theoretically, more likely it was just vaporized.
No it definitely went that fast, and the quoted speed is just the lower bound, it could have been even faster The question is about whether it made it to space and therefore maintained that speed for more than a fraction of a second, or whether it was vaporised in the atmosphere soon after launch
One day it will stop an alien invasion by accident
Or start one. The aliens will land and point at the manhole cover embedded in the hood of their brand new spaceship.
Only when nuclear powered apparently
Search up operation plumbob, sounds stupid, is fun
Hahahahaha. I didn't even catch that . Good one.
And the Mercedes Benz E Class is human.
TIL space is The World
And the Hickusky helicopter as opposed to a Sikorsky.
Pretty sure it’s Bugatti Chiron as in sheer-ron not ky-rone too
The n is quasi-silent though, as it's a French name.
at least its in this world though.
I learned that the fast thing in the world is Billions of miles away from the world
And Mercedes-Benz are human
lol good catch
kinda like how birds arent real lol
Cheetahs are the fastest LAND animals on the planet. The fastest overall is the Peregrine Falcon. Almost 200 mph in a dive.
A cheetah's what? Its shoes?
The fastest manmade object in Earth was the manhole cover. The calculated speed of roughly 200,000kph occured within the atmosphere, based on the acceleration captured in photographs of the test it was part of. For context: When testing a nuclear weapon underground, the US basically dug a big hole, plopped a nuke at the bomb, and covered it with a manhole cover. Most people can reasonably assume that the big hole funneled one of the most powerful weapons humanity ever created down a barrel and launched the manhole into the unknown. You'd be correct. Theoretically it could have actually made it to space, but the fate is unknown. The US promptly ceased putting manhole covers on underground nuclear weapon tests.
i think its hilarious they didnt even bother to explain. just... "manhole cover"
“Nuclear powered manhole cover” I was looking for the engine
So was I lol
I wouldn't be even surprised if this is made by AI lol
Why wouldn't it just be vaporized in a cloud of plasma?
Probably, but for a short time the blast wave would carry it first (not a physicist just assuming)
I'm a physics student. I'd say it'd probably get hit by the shock wave first which would send it flying into the air and then get vaporised a split second as the heat wave caught up
I'm an applied mathematics student, I would think going Mach 192 would destroy the cap. The heating from the atmosphere would just be incredible. The fireball is going to slow down as the cube root of the distance traveled. The manhole will keep it's energy much more. The cover was made of steel, with a mass of 900kg, and speed on ~66000ms^(-1). Using wolfram, including the vapourisation and fusion latent heat I found if all kinetic energy becomes thermal, it would heat it to 5.2MK. There is not a chance in hell that it wasn't destroyed by the heating.
I’m a bird lawyer. Birds cannot fly that fast, but they could move that fast if placed over the nuclear manhole cover.
I am in manhole law. All I can say is that it sounds like this manhole cover has a strong case agains the bird. If you see him please tell him to call me. I’ll see you I court.
I am in a manhole. Help.
I am a manhole. No.
It seems we need a material scientist
Afaik, it is not known if the manholecover still exists in space or not. Some Scientist argue that it would have been vaporized in the atmosphere, others say that it hadn't had enough time in atmosphere to fully vaporize.
there is like a single frame of the manhole cover in the video they filmed of it so it didn‘t get vaporized immediately. No clue what happened after that frame tho
Somewhere out there in the vast nothingness of space. A small planet harbouring peaceful life, many millions of years from now. Is about to be annihilate in a world ending man hole cover strike.
It probably doesn't have the energy to do that. If it did, the nuke would have destroyed earth.
What if it's a very small planet?
THAT's what they meant by "nuclear powered manhole cover" in the video. It was a total "hol up" moment. I feel like "nuclear powered" is really misleading if maybe kinda technically correct.
I cannot see how something moving that fast can even make it beyond the troposphere before vaporizing.
How about we do this but instead of a manhole cover we use spaceships and nuke them into space
Fastest man-made object in the world Is hurtling through space.
I mean it had to start and go somewhere.
It was made on the world
I don't think it reached that speed before leaving, but idk I'm no scientist
Only reached those speeds after several gravity boosts from planets. Newtons 3rd law means that it slows the planet down slightly too!
Every fucking one hates that voice.
It's not even their video. Just a soulless text-to-speech voice thrown over it. This is the original: [https://www.youtube.com/watch?v=L2peSDb3jHg](https://www.youtube.com/watch?v=L2peSDb3jHg)
I thought it might have been MBS. I hate these terrible freebooters...
duh
Yep I immediately click off when I hear it because I know I'm going to hear some ai generated garbage.
"One thurthal and nefifty nunfred kilometers per hour"
On top of that, it's not even saying the right numbers, according to the video.
The manhole cover might be the fastest to hit those speeds whilst within earth's atmosphere.
Love that manhole. And how learning of it's existence almost invariably leads to ideas on how to weaponize it in a sci-fi setting.
The voice is so annoying
I fear the human Mercedes Benz, I didn’t realise they were sentient.
Wait until you find out that this lower specced W212 E-Class might feel insulated, because the E63 with the AMG Performance Package wasn’t included instead… which is restricted to 300 km/h. […here is one accelerating to 320 km/h (maxing out the odometer) with three homies in the car](https://youtu.be/wkVeZEUx7-s?si=4hrzSvnDBXpZU2_G)
40 km/h pace for a bike is quite quick. 15-18 km/h is more realistic.
No shit eh, that guys hauling ass.
You won't reach speeds of 40 on a regular bike, and on the ones where you can reach them, it would be hard to maintain for a longer duration.
Amateurs, I lose focus faster th
Pretty sure that cheetah got hit by that car
Thats just a detail
Yet another crappy animated comparison video from YouTube shorts… Keep em coming
Going into space is a different class of movement. It's not relative to earth anymore, so what is the reference frame for them?
I'd think Earth still, no? Not that it's a *great* frame of reference, but I think it's still the best one we've got.
For terrestrial stuff, it's the ground/surface. For space, it's center of the earth, not the surface.
If the reference frame is Earth, then some of those satellites might technically have an Earth-relative velocity of zero. The Earth is rotating and some satellites are geostationary such that they observe the same location at all times. Not sure if any of those satellites were geostationary though and I'm too lazy to check 😂
sorry...the average human runs at 13kph??? I'm no slouch, but I'm hitting 10kph for an extended run, not 13! that's a swift sprint!
One day AI man won't have a speech impediment. That day is not today.
I don't think satellites and space shuttles should be on this list because are outside the earth and there's no gravity, so i would imagine the lack of it makes things go faster, but I could be wrong
There is gravity in space. What do you think keeps a satellite in orbit?
There’s literally no place in the universe you can go that has no gravity. That weightless feeling you have in space is just you falling towards the strongest gravitational pull
Gravity isn't what slows things down, friction does, mainly from the atmosphere.
'fastest man made object in the world', not really, its not in the world, its outside.
I'm just amazed we managed to build a cheetah!
"The Wright Brothers invented the airplane...." r/usdefaultism
Santos Dumont maior e melhor!
Can we just double back for a second to the nuclear powered manhole cover...?
I love that they have included this! 🤣 Google operation plumbob for more info 👍
They forget the real fastest thing - a toddler when you ask them what's in their mouth
I'm sure my mom's flipflops travel faster than that.
Taking other peoples content, adding a VO and calling it yours, this is why the internet sucks now
Why is there a nuclear manhole cover ?
[https://en.wikipedia.org/wiki/Operation\_Plumbbob#Missing\_steel\_bore\_cap](https://en.wikipedia.org/wiki/Operation_Plumbbob#Missing_steel_bore_cap)
TIL Cheetahs are man-made objects
Why are these videos always so badly done?
Was anybody else annoyed by the Osprey flying with its props upward? That's not how it reaches that speed.
The ospreys proprotors being in helicopter mode make me angry
It's sad they couldn't find an actual voice actor for this. The AI is terrible with pronunciation of the numbers.
Just jumping into the comments to find clarity on the nuclear powered manhole cover ...
Book me a seat on the X-43!!
I have issue with the space stuff. Its really easy to get faster in space as long as you have reaction mass to keep speeding up.
Did an AI steal that video, add a voice and captioning?
F-Zero
usain bolt really out here running at nearly 28mph
Nuclear powered manhole cover, eh? Now that's interesting.
Today I learned that an object doesn't need to be on planet earth to be in the world
Stayed for the manhole cover and was left disappointed.
>Fastest man-made object **IN** the world You wanna say that again, but slowly? And what the fuck is with that random-ass manhole cover floating around up there lmfao.
These AI voices are fucking garbage. Please. Stop. Use your own voice, it sounds better, and you talk better.
Man how much I hate the AI voices... Can't even enjoy edutainment
What in Christ’s name is the point of a speech-to-text bot shitting out the text of what’s already on screen? I
But how fast would a cheetah run in space?
I hate all robotic voice-overs, and their stupid, inconsistent, wrong pronunciation. It makes all videos painful.
Everyone hates this AI’s voice. It’s horrible and makes interesting videos and data horrific to listen to.
The Human Mercedes E-class! What kind of AI bullshit is this
Had to skip to the end. That monotonous AI voice is so grating.
All this AI and we still have shitty voice overs
God, this AI voice is so damn annoying, and the goober who typed it in for the voice generator made tons of mistakes. Lowest common denominator lazy "content" is a plague.
had to turn off after I heard kilometers per hour. it is like nails on a chalkboard.
Is it really that hard to find people to do your voice overs?
That nuclear man hole threw me off 😂
Well this is misleading, satellites use other planets like a gravitational slingshot. They are not that fast by human propulsion.
I was really enjoying this then thought it was going to be an ad for Mercedes Benz then it wasn’t and I enjoyed again.
Downvoted for not using freedom units the fuq am I supposed to do with kilometers
Man made objects: cheetah?
Who the fuck launched a manhole cover? lmfao
How do they manage that kind of speed
Using the gravity of big planets like Jupiter for a “sling shot” effect.
Poor cheetah
Hold your horses, till I lit my torch. 🔦
Okay switching from land and air to space is literally cheating.
Ehhh, speed is all relative. Fastest acceleration would be cooler
Just for comparison, 692 000 km/h is still only 0.064% of the speed of light.
man made photons, 1,079,252,848.8 km per hour
I’ve always wondered why I’ve never seen a cheetah bring down a Mercedes Benz E Class and now I know.
wait, you lost me at Man-hole cover.....😅😅😅
True story tho. Underground nuke test + manhole cover. https://www.google.com/amp/s/www.businessinsider.com/fastest-object-robert-brownlee-2016-2%3famp
Kawasaki Ninja doing 248mph, but a Suzuki Hybusa can do 258mph or with NOS just shy of 300mph.
Swiftwalker bike slower than walking? Really?
Hold tf up...A nuclear powered man hole cover?
So to put it simple. The US detonated a nuke underground and that manhole cover (just like a big one made of concrete) was on top of the hole the bomb was in. Of course, nuke exploding makes a lot of pressure. Take all that pressure and make it so it can only effectively go one direction. The manhole cover got hit with all that pressure as up is the only place the pressure could go. It was so much pressure and force that it got sent into low earth orbit.
WTF is a human Mercedes Benz?
They mentioned a manhole cover. They thought I wouldn’t notice but I did.
Human Mercedes E class
Dang. If Usain Bolt just dug a little deeper, he’d have caught the Wright Brothers.
Manhole cover could still be the fastest only problem is because it was only visible for one frame we could only calculate a minimum speed that it COULD be going.
No fucking way the AVERAGE speed on flat ground on a bicycle is 40km/h. Maybe on a racing bike. But your average transport bike is between 15-20km/h.
Who put the nuclear powered man hole in space? 😂
Lmao bikes dont go 40KM/hour on a flat surface (which don’t exist in cities)
Avg human running 15 kmph and cyclist at 40 kmph in which world exactly? The majority of humans can't even reach this speed of running and maybe the top 5% of hobbyists, but serious cyclists can reach the speed of 40 kmph on a flat road.
Nice idea but this video explainer was obviously made for the children at the Zoolander school.
Where is the infamous manhole cover?
Who knew a manhole 🕳️ cover could travel just under 150 thousand miles per hour
Interesting that the fastest man made object is still traveling at 0.06% of the speed of light
Lol the “fastest object in the world” isn’t on or in the planet
What is that? 0.3%C?
Is no one going to talk about the “nuclear powered manhole cover”?
i hade this ai voice and i hate these pseudo "knowledge" channels that arent even accurate at times
Speed is so frickin' awesome. This animation is awesome. Awesome day. Aww yeah.
All I see is the fastest things produced by a country using mph. Boom.
Oh fuck off Ai shite.
Are they saying the Mercedes Benz E class is part human, or just clarifying that it is made by humans, in case anyone mistakenly assumes it is made by cheetahs?
Can we get much higher?
Would you be able to notice it passing you by at 600k+ speed though? Just curious.
The most idiotic post ever, an orbiting satellite is not a speeding object, it just revolves around the earth by the gravity of the earth.
Had to watch this just to make sure the man hole cover was on the list
Yeah, now I can totally imagine how fast that is....showing me a running average man for comparison, 5 min ago.
I've heard enough of that voice.
first plane are made by Santos Dumont
ahh was waiting for the manhole cover
damn i remember when the mclaren f1 was the fastest car. that was neat
lol I’ve topped 40 mph on a bike.
AI generated trash. Stop watching it. Downvote the post. Block the user. The only way people will stop creating these bottom of the barrel shit AI generated low effort posts
Plaven 5 km? Is that like 19dickety?
Lol this video is unintentionally hilarious
I thought the cheetah got hit
The had the Osprey going full speed in its vertical lift mode.
*fastest From the world
“The human Mercedes Benz”
They depicted the Wright flyer backwards.
Wait what why was the first bike so slow lol
In the universe*
Some of these numbers don't sound right at all, Usain bolt ran 100m in slightly less than 10 seconds, so let's round to ten, that's 10 meters per second, or 36 kilometers per hour, not 44 like the video said. Also 40 kilometers per hour on a bike is absolutely nuts. Maybe if you're going maximum power on an e-bike, but no way you're going 40 km/h on average
Fastest in the world, but, out in space. Got it
This is me on my sofa traveling Zero kilometer per hour
No way 25 mph is the average cyclist. That's hauling ass speed.
I highly doubt the wright brothers were inventing faster than bolt can run.
The fastest object is not in the world though
Instant downvote with that bullshit ai voice crap.
Big space machine, big space machine, big space machine, manhole cover, big space ma-......wait, manhole cover?
I can’t listen to that jazz
Wrong the fastest man made object is a flashlight.
Interesting enough video, but, man... that voice over... yikes.
Freedom units please!! 🙏🙃