I was watching a SciFi tv show where large objects had an outer speed limit of 18000 kph and that got me wondering what things in everyday life are faster than even 500 kph.
I know bullets can be fast, but they are not exactly everyday life (at least in my life).
I included mass for obvious relativistic reasons.
radio waves dont have mass but do have relativistic mass. And you didnt clarify whether relativistic mass counted, so I’m going to go with radio waves. They travel at the speed of light. I am the winner. I’d like my nobel prize in literature now.
There’s a dirty joke in here somewhere
All every day objects but photons have mass. Maybe also neutrinos.
Bad faith
Me, at the end of any social engagement.
It’s like that episode of Simpsons where they’re filming something at the Simpsons’ house and Homer learns there’s snacks. He suddenly becomes a Homer-shaped cloud of dust.
Neutrinos. About 100 trillion go through you every second with about .000001 percent interacting with you. And they have a non zero mass.
The crack of a bullwhip is caused by the tip exceeding the speed of sound, around 750 mph/1250 kph.
How many bullwhips are cracking your general area on an average day?
The whip cracking factory. Duh…
The shortest unit of time in the multiverse is the New York Second, defined as the period of time between the traffic lights turning green and the cab behind you honking.
- Terry Pratchett, Lords and Ladies
Let’s break it down…
The distance, between the traffic light and the cab driver, should be approximately 10 meters.
The time light needs to reach the cab driver’s eyes is:
D ÷ c = 10 ÷ 299,792,458 = 0.0000000333… seconds = 0.0000333… milliseconds
The distance between the cab’s horn and your ears, should be approximately 5 meters.
The time needed for the cab’s honk sound, to reach our ears is:
D ÷ u = 5 ÷ 295 = 0.0169491525 seconds = 16.9491525 milliseconds
If the cab driver had a reaction time of zero, it would still take 16 milliseconds for us, to hear their honk.
The conclusion is that cab drivers have a negative reaction time, so that they can honk before the light turns green, breaking causality.
The crack of a whip is a sonic boom caused by the tip going supersonic.
Some sex includes supersonic elements, then.
Traditionally, you use a rider’s crop in sex, in which case, the cracking sound is the flap clap when you slap.
Bull whips, the ones that go supersonic, are often considered less sexy because they rip flesh and make people stop feeling all good and sexy.
Not that I’ve ever used either in sex. This is just what was explained to me back when I did photo shoots for BDSM community members and events.
That’s awesome knowledge! Thanks for sharing and enlightening me! :D
🎵 I wanna make a supersonic man out of you 🎶
grabs pool queue
Kill the Queen
I don’t think that those people waiting in line to go swimming wanted to be grabbed.
That’s cool
Super sonic means above 340 m/s, give or take some meters.
Gotta go fast
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That manhole cover.
I wonder where that thing is nowadays. Probably landed in the ocean somewhere, or even burned up if it didn’t just flat out leave earth orbit.
I’m pretty sure the article iIread said it had more than enough speed to reach escape velocity, but would have ablated/vaporized before doing so.
Most likely never went far before it vaporized.
Mantis shrimp punches travel 12 to 23 meters per second (approximately 27 to 51 miles per hour) in water the acceleration involved can reach up to 10,000 Gs.
The peak force generated by a mantis shrimp’s punch can be as high as 1500 Newtons, which is over 2500 times the animal’s own body weight.
The acceleration of their punch is such thay it creates a cavitation bubble which, when it collapses, can generate 8,500 degrees Fahrenheit – nearly as hot as the sun’s surface at 10,000 degrees Fahrenheit.We named ours Smeagol.
The Mantis Shrimp is one of the few things that make me question pure raw evolution. How the fuck can you just evolve a sci fi plasma pistol?
Glass cracks propagate at an absurdly fast rate. Something like 4x the speed of sound (1400m/s). Not a physical thing moving, but very common.
I think it would propagate at the speed of sound in glass.
It seems that depending on the type of glass and the direction of the waves (longitudinal, shear, or Extensional) the speed of sound in glass can be between 2300-6000 m/s
Longitudinal is the type we normally think of though, and that is between 3900-5600 m/s. Which is still much more variation than I was expecting.
The speed of sound in air is around 340 m/s depending on temperature.
So if the op is correct about the speed, then it seems the cracks propagate slower than the speed of sound in glass.
https://www.engineeringtoolbox.com/sound-speed-solids-d_713.html
OP specifically asked for something with mass. This is not a thing with mass. This is the same as saying a shadow can move faster than the speed of light.
breaks a pane of glass over your head
let me see you do that with a shadow
Haha
Interesting… how do you know about this?
Slow Mo Guys on YouTube have filmed glass cracking and calculated its speed many times. Very lovely channel that I recommend!
Hmm how about CRT monitors/televisions? Not that common these days but they are basically little particle accelerators that shoot electrons at a pretty good fraction of the speed of light (like 30%). But I guess that’s not really an answer to you question unless you define electrons as objects. I guess my other answer would be airbags which deploy at about 300 kmph
unless you define electrons as objects.
Well, only sometimes.
Satellites are visible and move at some km per second. Pretty fast
Inside the atmosphere anything faster than some hundreds km/h get so much drag that they either are extremely small (bullets) or extremely powerful (planes, maglev trains)
And planes reach their higher speeds only at altitude where density is lower
Are we observing them moving, or are they stationary and we are the ones moving? dramatic dun-dun-duuuunnnn
(kinda joke kinda serious)
The answer is yes, depending on your frame of reference.
You’re moving at about 700 m/s while sitting in your couch, according to Earth’s rotation. So if the plane goes west at max speed, it would be 1400 m/s faster than going east.
Everything in the Universe is moving.
The air leaving your lungs during a sneeze is moving roughly 100mph.
I sneeze obnoxiously loud. I bet I break 130 mph easy. How do I go about testing this?
That’s probably the fastest thing a human body by itself can produce…
Modern MLB pitchers can regularly throw a baseball 100+ mph. Currently, the flick of the wrist during a curveball throw is the fastest human motion recorded.
A finger snap is incredibly fast, occurring in just 7 milliseconds, making it the fastest rotational acceleration in the human body, with peak speeds reaching 7,800 degrees per second—about three times faster than a professional baseball pitcher’s arm—thanks to the perfect balance of skin friction and compression.
Not saying you’re wrong, just pointing out this is interesting.
A baseball pitcher snapping his fingers is where it’s at.
Some viruses particles explode out of cells with crazy force. I don’t know it off the top of my head but I remember reading about that somewhere.
thing a human body by itself can produce…
…but nobody has measured my farts yet.
Nobody has measured your farts and lived.
We have liftoff
Road
runnerfarter
Some MLB pitchers are able to throw baseballs faster than 100MPH. Nerve signals can travel through the body at 200MPH.
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Wow, that’s nuts
Commercial airliners (800 - 950 km/h). By far the fastest “everyday” experience for a human is flying.
The tips of the turbine fan blades are going much faster than the plane itself.
Do you know any rough numbers?
According to this document, the Trent XWB from Rolls Royce has a fan diameter of 3m and a reference rotational speed of 2700 rpm for the low pressure stage, which would result in a blade tip speed of 424.1 m/s or 1526.8 km/h according to this calculator
I know that some generator turbines go ~3600 rpm
If my (admittedly super rusty) math is right if we assume a radius of 1 meter which would mean a circumference of ~6.28 meters. In that case the tips of the turbines would be moving:
6.28 * 3600 =22,608 meters per minute.
Please feel free to rip up my math as I’m going on little sleep at the moment.
Search-fu gives me 377 m/s or 1357 km/h.
Gotcha, so I wasn’t too far off.
