[Zer0 (OP)]

Irrespective of the Top Speed & Total Distance Travelled.

What is the Fastest Accelerating Species on Planet Earth!

P.S. - Trick Question.
🐣

[Halc]

A flea can accelerate at about 1000 m/sec², or about 100g, which totally outdoes any of your options.
There's probably things that can beat that.

[Eternal Student]

Hi Zero,  I hope all is well.
Do we have to wait for the poll to close?

[Petrochemicals]

Trap jaw ant

[Eternal Student]

A microbe with flagella (or some method of acceleration of it's own).  For example, a microbe in the flea or ant previoulsy described by Halc and Petrochemicals?

[Bored chemist]

Tortoise, when dropped by a bird onto a rock.
Something like 1000 to 10,000 g.

[alancalverd]

I think that's called deceleration.

Just in case there are any young nerds reading this, a stapp is a unit of shock equal to one g-second, named after USAF Colonel John Stapp who investigated the effects of acceleration and particularly deceleration on the human body in the 1950s,  mostly using himself as a crash dummy.

[Bored chemist]

Jerk.
... is the related term for rate of change of acceleration.
The first, second and third derivatives of jerk are snap, crackle and pop respectively.
Who says scientists have no sense of humour?

I think that's called deceleration.

Not by physicists, who recognise that it's an acceleration in the opposite direction.

[Bored chemist]

Come to think of it, there's nothing to say the acceleration has to be natural.
So that opens the door to some odd bits of research.
https://www.liebertpub.com/doi/10.1089/ast.2020.2405

Annoyingly, it doesn't explicitly give the accelerations.

[Zer0 (OP)]

Hi Zero,  I hope all is well.
Do we have to wait for the poll to close?

!!!Greetings!!! @Eternal Student
😊
🙏
Hello there, & Welcome to the TNS Forum.
🙋

Yes I'm doing just Fine, Thank You for asking.
Hope you are keeping well & in good company too.
🤞

(When you type in any registered users name, say for example ' Halc ' they would read it when they visit the ' OP '.
But say if it was something of Grave Importance or an Emergency situation...
Then simply attach the ' @ ' sign before their name..
@Halc
(Like 👆 this)

Then a special email notification would be sent to the User stating...
" So n so mentioned your nickname in so n so OP ".
(I did that with your Nickname... @Eternal Student & perhaps you've been Notified thru email. )
Simple!
👍

Now coming onto your Query.
I had eventually chosen an Option to " Show Poll Current Results as soon as User Votes "... Hence, perhaps the Poll does in a way self reveal as time passes & more Users vote, then Percentages change.
👍

But You know what, this place is stuffed with Smart, Intelligent & Wise folks...
😏
Hence the moment i Create a Poll...some SmartyPants instantly crawls in & blows it up!
😑
At times I'm forced to Wonder, where the Heck in the World are all the dumb folks hiding at.
🤷
& What's more...at times... I'm even challenged bout my Own Correct Option Answer.
☹️
Seriously, this place is pretty hard to survive in.
😔

But Hey!
👻
I'm still Alive n kickin!



P.S. - You are a NewBee, still pretty sure You read all those looong & booooring Terms & Conditions & Rules & Regulations, Right?

But how'd You cope up with that specific rule which states :-
 " Users need to be Naked while Reading or Writing anything in the Forum " ?
🤔
Honestly, that was a deal breaker for Mee...but somehow I've got used to it now.
Perhaps You would too.
👍


First Edit - This is how i selected Your Quote & then replied to it.

I went on your Comment & Clicked on the Blue ' Actions ' Tab.


Screenshot_2021-05-28-01-26-52-887_com.android.chrome.jpg (196.59 kB . 1080x2156 - viewed 16010 times)

Choose the very last option ' Quote (Selected) '.

I've Noticed You personally Thanking Users, which is s Really Good thing.
👍
But if you like you could also just simply go to their Comment & click the Blue ' Actions ' tab & choose the very first option...
' Say Thanks '.
(I'm gonna do it with your Comment/Post)
👍

Second Edit - Once you Thank a User's Comment/Post...this is what appears at the Bottom.


Screenshot_2021-05-28-01-36-34-205_com.android.chrome.jpg (230.19 kB . 1080x2156 - viewed 16013 times)

' The following Users thanked this post : Zer0 (my nickname)
👍

Third Edit - Seems you're easy fit with the LaTeX & already aware of how to create an OP n how to comment n everything.

But if You wish to Create your Own Funn Poll...just enter any sub-section...like the one this Poll is in
 ' Just Chat ' & simply click on the Bar Statistics Option.


IMG_20210528_012515.jpg (242.7 kB . 1080x2156 - viewed 16020 times)

Once you do, the Poll methodology is pretty easy to Understand n self explanatory.
👍
Just Please make sure to add the
 " ? " Sign at the end of each of your OP.

Fourth Edit - Wondering how I'm
 ' Editing '  my own post, after I've already posted it?

Say if i make a comment, but forget to add a minor detail, or say after i post it n read it(maybe at times the
 ' Preview ' option might Not work) then i could still ' Modify ' my own post to make Corrections or add missing details.


Screenshot_2021-05-28-01-47-28-848_com.android.chrome.jpg (207.11 kB . 1080x2156 - viewed 16009 times)

Third option is ' Modify '
& Incase i wanna dump my whole post thinking it's invalid, then Fourth option ' Remove '.
👍

Fifth edit - Yes I'm inserting Screenshots into my post.

Whenever you're typing into your post, right at the bottom you'd see...


Screenshot_2021-05-28-01-53-57-071_com.android.chrome.jpg (339.42 kB . 1080x2156 - viewed 16000 times)

+ ' Attachment and other options '

Click on the ' + ' (plus) sign & you'd get further options...


Screenshot_2021-05-28-01-54-30-764_com.android.chrome.jpg (363.73 kB . 1080x2156 - viewed 15994 times)

I first click on ' Choose File ' & then select the appropriate image from my screenshots & after that i return to the Post n click within it to mark the Spot where I'd like to have the image shown(your cursor position would be the spot) & then again i scroll down to 'Attachment Options & finally click on
 ' Insert Attachment '.
👍


& Once again, on behalf of All of US, Welcome!
Hope You have a Wonderful Time in here, nJoY!
🖖
(Mods out here are extremely helpful, do Not hesitate to ask for Help...& Remember, You are Alot Smarter than You Think.)




Sixth Damned Edit - See, i forgot to mention i login thru an Android device(cell/mobil) hence my screenshots would differ from the Desktop Version...but won't be that different or difficult to Understand.
Okay Cheers Now!
🍼

[alancalverd]

Quote from: alancalverd on 26/05/2021 12:33:51
I think that's called deceleration.
Not by physicists, who recognise that it's an acceleration in the opposite direction.

But pilots and drivers recognise the difference between blackout/wings bent upwards, straps loosening (acceleration) and redout/wings snap forwards/straps tightening/airbag deploying/engine coming at you from either direction (deceleration), which is why Col Stapp "flew" his rocket sled into a water trough to explore the more dangerous and less controlled problem.

[Bored chemist]

Col Stapp

One of the important results of his work was rear facing seats on military aircraft.
In which case, when the plane slows down (in the conventional sense) the straps loosen etc.

No matter how hard you try to suggest otherwise, deceleration is just acceleration from a different PoV.

[alancalverd]

Far be it from me to "suggest otherwise", but merely to use the idiomatic phrase instead of harrumphing around like a pompous Telegraph reader. Lord Denning's advice to litigants and barristers was "Use short words, so people understand you."

The reason for the rear-facing  seats was largely driven by Stapp's early discovery of eye damage during what some politicians would call "acceleration from a different point of view", like an army "returning to previously established positions" is a "victory from a different pov".

A military wife of my acquaintance  had the opportunity to spend a summer with her husband in the USA, with her children. They travelled in an RAF Hercules. The loadmaster offered to entertain the kids in the mostly-empty cargo bay. Back home, first day of school, traditional "what I did on holiday" essay, daughter wrote "We flew backwards to America and played football in the plane". Mother called to school and told daughter had disturbing fantasies.

[Pseudoscience-is-malarkey]

Two of the four said "species" are fictional.

[Bored chemist]

"Use short words, so people understand you."

Ok, that means
"acceleration"
and
"deceleration"
are both OK because they are the same length.

Or, should we use the "better known" word, since it is more likely to be understood?
Well, "acceleration" gets's a lot more hits on Google (300M ) than "deceleration" (15M).
So, it's probably more widely known.

What caused the eye damage was a force which could be calculated from the mass times the acceleration- as is standard practice in physics.

Essentially, it looks like you want to show off the (trivial) fact that you know a "fancy" word for slowing down.

like an army "returning to previously established positions" is a "victory from a different pov".

If more armies recognised that battles are typically lost from both points of view, the world would be a calmer place.

[alancalverd]

The first, second and third derivatives of jerk are snap, crackle and pop respectively.

Derivatives, eh? Are we showing off, by any chance? 

[Bored chemist]

The first, second and third derivatives of jerk are snap, crackle and pop respectively.

Derivatives, eh? Are we showing off, by any chance? 

I can't imagine who would have started such a thing; showing off a knowledge of obscure units....

[alancalverd]

My first post was addressed to the kind of nerds who estimate the jerk of a decelerating tortoise, and get the dimensions wrong. But you are welcome to join in.

[Bored chemist]

In fairness, the units are strange.
Shock has units of 9.8 metres per second- rebadged as the Stapp.
Obviously, that's a speed.
Call G 10 just to make the arithmetic easier.
If I slow my sledge down from , e.g. 100 m/s over the course of 10 seconds the acceleration is 10 m/s/s i.e. "1G" and the duration is 10 s
So the "shock" is 10*1=10. ( the same speed that I started with)

Now imagine that I let the sledge "coast" to a halt more gradually. It takes 100 seconds.
My acceleration is 1 m/s/s i.e. 0.1G and the "shock" is 0.1 * 100  = 10 m/s

Finally, imagine that I fire retro rockets and bring the sledge to a halt in 1 second.
The acceleration is 100 m/s/s or 10G
But, since the duration is only 1 second, the "Shock" is 10 * 1 i.e. 10m/s.

I think the physiological effects would be different; but the "shock" is the same.


What use is this measurement of initial speed in funny units?

[alancalverd]

It's the product of deceleration (measured in units of g, 'cos that's how aviators think) multiplied by the duration of said event, because Stapp discovered that the product pretty well determines the damage to a bag of giblets in jelly ('cos that's what aviators are).  The army uses a similar approach to the design of helmets and other small-arms protective wear.

It makes sense. A light tap with a hammer on your infantry helmet can produce an initial cranial acceleration/deceleration wave of 1000g  but it won't last a millisecond (<1 stapp)  or do any lasting  damage, but 10 g for 1 second or any other 10 stapp combination takes a bit of getting used to, and 100 stapp of deceleration, however delivered, tends to separate the entrails though it is survivable if you are sitting backwards.

Winch launching a 2-seat glider is interesting. The student sits in front and is almost supine, and the instructor in the rear seat is upright. The initial acceleration is about 0.3g for about 2 seconds. I find it very disorienting to be subject to -0.3g  in the front, but quite good fun to experience + 0.3g in the back. Your flying tortoise (et sim ninja turtle) has the advantage of near-symmetry, though I have spent some time with a vet designing a horizontal-beam x-ray facility for lateral views of a pregnant testudine because their insides distort under lateral g.