How to Survive a Grenade Blast
So I’m here today in Florida filming with Kevin more commonly known as TheBackyardScientist. That’s right! And today we’re going to take these two live grenades, and we’re going to be dipping them in this tub of liquid nitrogen. So go ahead and hand them to me. And then- DUDE! BABY ALLIGATOR! 😀 oh no. So now we’re both about 15 feet away (4.5m) except I’m on land with a grenade on land, and Kevin is in the water, with a grenade in the water. So the question is, which one of us has a better chance of survival? Take a moment to decide, do you dive on the pool deck, or jump in the pool? We both had very different theories for survival. So as firm believers in the scientific method. We decided to test out our hypotheses. So we devised some experiments but before I get to those, I think it’s important to understand how a grenade actually works. So once you pull the pin, as long as you keep this handle pushed down You’re perfectly safe, but as soon as you let go of the grenade. This handle springs off. Which releases a spring loaded striker that hits a percussion cap that starts a 5 second fuse, that you can’t do anything to stop. (Oh great.) but I never really thought about it until I made this video but the reason you see a “waffle” pattern in grenades, is to create weak points in the shell. So that’s where it’s going to break first. And since there are 40 bumps, this grenade is basically an explosion that shoots 40 bullets in all directions. In warfare, that’s what makes them lethal. So the best strategy is to get as far as possible in a few seconds, and then hit the deck with your feet facing towards the grenade. This present the smallest possible target for a flying grenade chunk to hit. So 15 feet away (4.5m) mathematically that puts my chances of getting hit, at less than 1%. (YAY!) But things are even better for Kevin in the pool! It’s been documented that bullets do not travel far in water. At all. The drag force is so high, they just disintegrate after a few feet. So he has a 0% chance of getting injured by a grenade fragment, in the water. But we are thorougher men of science, and we wanted more information. So we designed an experiment, where we filled 3 balloons, half with water, and half with air, to roughly mimic the human body, which is mostly water. But we have pockets of air in our lungs, intestines, in our sinuses, in our ears. And then we subject them to identical explosions, identical distances apart in both air *BOOM!* and water. *Even more BOOM!* As you can see, there isn’t much effect on land because air is compressible. which helps dissipate energy, plus the blast wave reflects around objects. But in water, the story is different. (Woah.) Water is in-compressible. Which means not only is the blast wave not dissipated, but is passes right through your mostly water body. So the air in the balloons, represents the air in your body. Like your lungs, and your sinuses. So basically, what’s happening is the blast wave is pushing in on you, but the air cavities can’t push back with the same force, since they’re filled with compressible air. That means they move a lot, really quickly, which causes permanent damage. As a control, you can see this balloon that is filled with just water. It is perfectly fine. That would be like your arms and legs, which have no air in them, and they are basically in-compressible like water and would be fine. An explosion under water, is sort of like these silver ball things (Newton’s cradle…) So this represents the initial energy of the blast, which then comes down, and passes through the in-compressible water, and then comes out without loosing any energy at the water surface. but now you squish-able lungs are surrounded by in-compressible water, in the path of the blast wave. And so, when the blast happens, there’s a lot of relative motion. Which is bad, if you like your lungs, the way the are right now. (I don’t.) And sadly, our experiment is verified in real life. So the jerks, throw an M80 into the water, and you can see the devastating effect it has on land, if a bird were that close to an M80, it would be startled, but it would be perfectly fine. So now that you know, think back which did you choose? While it’s true, there is a small chance you would get unlucky with the grenade chunk, if you choose to dive next to me. If you choose to join Kevin, you will be in the pool, for the rest of your life. (Rekt.) (Rekt.) So huge thanks, to the TheBackyardScientist for dying, in the name of science! If you’ve never seen his stuff, you just have to check it out. Here’s a video, we just finished filming. It’s a bunch of Oobleck, which is a non-Newtonian fluid, and we destroyed it in every way imaginable. It’s incredible footage, his channel is full of this type of junk, so check it out. Subscribe. And as always… Thanks for watching. So I live, here, and I took a plane to Kevin’s pool, way over here. And on the plane ride, I was listening to the Harry Potter book series. And I know this is quite possibly the least cool and sophisticated audio book recommendation that I’ve ever given on my channel. But I read the books, 15 years ago, and it was really fun to rediscover like a bunch of the little details, that I’d forgotten Plus the dude who reads them, does all of the voices. And he does a really good job. So if you want something fun to do, while commuting, or work around the house. You can rediscover the Harry Potter book series, like me, or you can get any other book for free. All you do is use the link in the description, or go to audible.com/MarkRober By supporting Audible you support me, and future plane rides to places like Kevin’s pool. English subtitles by Iowyyn and corrected and made a little more funny by Icy Cubey. Now, go subscribe to Mark Rober.
Yudi Soegiono
October 19, 2019 at 1:31 pmJump in the pool
Sappskull 2.0
October 19, 2019 at 2:56 pmUr vid is a meme
Ian Thompson
October 19, 2019 at 9:54 pmI died
Pavel Podešva
October 19, 2019 at 11:48 pmDo you need a real grenade?
Nordia Brown
October 20, 2019 at 2:19 amJump in.the pool
Art Keyos
October 20, 2019 at 2:27 amLove subtitles comments 😀
King Mime
October 20, 2019 at 3:43 amUhhh…..why did u unrelease the grenade
Pixels
October 20, 2019 at 4:39 amNow when I see a floating fish at my lake I could say it blew up
Christian Le
October 20, 2019 at 10:20 ampool
pookee johnson
October 20, 2019 at 6:59 pmI think u jump in the pool
Top10vlogz !!!
October 20, 2019 at 7:41 pmPool
erica presley
October 20, 2019 at 8:51 pmHave you ever thrown a grenade? Like if you haven't and comment if you have. And if your family member was/in the army thank you.
erica presley
October 20, 2019 at 8:53 pmOh and go to 1ced and click the first one and please subscribe.Thank you
Running Production
October 21, 2019 at 8:29 amWell, the "handle" is actually called spoon in the US Army, we are discouraged to call it "Handle" because we don't want people to handle the grenade with the "Handle" if you catch my drift.
Grenade don't usually kill you with shrapnel, but it kill you with a shock wave, many movie would portrait people being stunned and shock after a grenade is thrown into an enclosed environment which basically the same as people repeatedly punching your brain, because there are no where else for the shock wave to goes but keep bouncing back, people usually died from brain swelling and internal bleeding even if they did not catch any shrapnel
Outside, Grenade actually didn't do much, it's more like a throwable claymore, which is use to wound, but not kill your enemy. You chuck a grenade into an open Machinegun Nest, the occupant of that nest may be wounded but not necessarily killed (Depends on where the grenade landed)
The only way to avoid being wounded by a grenade is to get lower than the grenade when it exploded, or put something in between you and the exploded grenade, in the Army we were taught to get down using the bergen to shield between you and the grenade, the Bergen will absorb most of the shockwave and shield you from shrapnel damage too, however, don't do what most TV do by putting your Flak or K-Pot on top of a grenade, it won't work, it will only get you a medal of honor posthumously…
Jessica Halvorson
October 22, 2019 at 1:13 amland
Noah Sutton
October 22, 2019 at 12:48 pmPool
Pieter Boer
October 22, 2019 at 3:56 pm1:54 y'all thinking the same as me?
x Ludicrous x
October 22, 2019 at 7:52 pmDude! BABY ALLIGATOR
Eaulrich’s Vlogs
October 23, 2019 at 11:31 amThe real answer is not even in the video…
The real answer is…
Awareness, just don’t drop it, or if you didn’t do it, throw it back to your friend that you hate so much
Skateboarder Pro
October 23, 2019 at 6:25 pmKevin whin,s
noah AJ 66432
October 24, 2019 at 12:06 amI would R U N Away from the grenade instead of jumping in water or diving on ground
Totok Ocampo
October 24, 2019 at 4:50 amWhy not just run for ur life
Emily Kelbell
October 24, 2019 at 7:59 amExactly!! That is the best thing you could ever do to the globe model and that's the best use of it!! (5:07)
CASAN0VA
October 24, 2019 at 1:59 pmYouTuber in YouTube with a YouTube on YouTube*
Jette Møller Jensen
October 24, 2019 at 5:45 pmThe dude that reads them (the Harry Potter audiobooks), is Stephen Fry, might I add 😛
Jeffrey D
October 25, 2019 at 12:45 pmWhat if I'm drunk and my buddy and I take home two chicks and I'M THE ONE WHO HAS TO JUMPP ON THE GRENADE?
.
How to survive that?
Father_Xhungus
October 25, 2019 at 9:53 pmPool pool
The Dude
October 26, 2019 at 7:47 amon pool deck
Kick Punch gaming
October 26, 2019 at 12:40 pm1:53 wtf it could hit you balls
Lolipop Dornit
October 26, 2019 at 1:55 pmBut if a fuse burns then wouldn’t the water stop it
GRUG GRUG
October 26, 2019 at 5:26 pmI bet the backyard scientist is a Minecraft pro
Noor Nasri
October 27, 2019 at 12:41 amSo, wouldn't it be best to kick the grenade into the water and duck on land?
Zaih Brigley
October 27, 2019 at 2:14 amIf that were me, ID BE OUT SO FAST BY THE TIME IT EXPLODED ID BE IN MISSOURI (I’m in Ohio)
Wilton & Autumn Playz
October 27, 2019 at 2:53 amJust go in the house
Mr. PIP
October 27, 2019 at 3:55 amOr.. just read something else that won't get u thinking witchcraft is cool
AlexKazam
October 27, 2019 at 12:29 pmIn call of duty you can RE – throw the grenade by pressing G
Yeet-ersarous. Rex
October 27, 2019 at 5:09 pmEasy. Just use Flak Jacket
Freddie Coate
October 27, 2019 at 10:37 pm0:57. I was expecting him to say he tested it with his nephews
Young Madara
October 27, 2019 at 11:09 pm"Take a moment to decide."
I would kick the other grenade to the water then crouch as low as I can on the ground. Thank you
Nosson Oirich
October 27, 2019 at 11:58 pm3:04 orange balloon looks like a human
Skycle Playz
October 28, 2019 at 12:38 amThe silver ball thing is Newton’s crattle
Sean Parkes
October 28, 2019 at 2:07 amsilver ball thing
Sean Parkes
October 28, 2019 at 2:09 amor u could just run
mickle davees
October 28, 2019 at 2:23 am0:17 that's a whole entire dog what u talking about
slime 15140
October 28, 2019 at 3:27 amSimple, if grenade in water, don't jump in. Otherwise dive for water.
Sammy6apples
October 28, 2019 at 4:24 amMark: sliver ball things
Me: actually knowing the name
Law :3
October 28, 2019 at 4:24 amThe people that voted for water plays minecraft
HolyPro 420
October 28, 2019 at 7:40 am1:17 is literally a meme now
snoןnǝɯǝɯ
October 28, 2019 at 9:12 amRyan bro just build a TNT launcher and get some diamond armor lol
no u
October 28, 2019 at 3:55 pmhow about… kick the grenade into the pool…
Jordan Fuel
October 28, 2019 at 4:57 pmIn short water is dense than air, so water will densly f**k you
scorpius malfoy
October 28, 2019 at 5:31 pm4:05 wait what happened?
animation kayla ;-;
October 28, 2019 at 7:29 pmI'd jump onto the ground 1 it would be easier to get away faster and is way more closer than water now if your on a cliff jumping off it's just like comcreate hard that's why when people jump over water they still where a pair sale cause how far it is and with the ground your chances of getting hit is most likely more but at least your still safe and not being compressed in the water (I haven't watch the while thing year I'm 1:57)
Landon Shah
October 28, 2019 at 7:41 pmWhat about if you exhale in the water
10k subs with one video?
October 28, 2019 at 9:57 pmSub to me if you love ur mum / dad / girl friend / boyfriend
( I’m a small youtuber trying to grow ) god bless you .
Alan Cogan
October 28, 2019 at 11:23 pmJust stuff the grenade up your arse, pull the pin, and have a 100% guaranteed chance of fatality.💥☠😆
Shuckle
October 29, 2019 at 1:18 am1:51 a grenade hits that inappropriate spot right there
alex walker
October 29, 2019 at 1:44 ami am going with mark i mean it is his show
Aaron Soto
October 29, 2019 at 4:58 amI would of said the pool. Good to know!
A Singh
October 29, 2019 at 8:43 am1:53 may be we need to close our feet too coz I like my nuts not getting hammered by a fragment.
jalink1
October 29, 2019 at 11:23 amthis handle springsss..(video ends)
Mr. Nice Kid
October 29, 2019 at 12:06 pmIt’s pool
Nancy Salhab
October 29, 2019 at 12:25 pm#TEAM TREES
Rahul Plays
October 29, 2019 at 12:29 pmWhy would you photoshop your self to look buff and strong in the thumbnail xD
Carrot Guy
October 29, 2019 at 5:17 pm-but as soon as you let go of the grenade it will explode into a million pieces
lets go
Oh…. Well it was nice kno-
BOOOOOOOOOOOOOOM!!!!!
sinde_tf nrg
October 29, 2019 at 5:54 pmThe one in the pool Will probably die because the pressure is som high
uranium 3312
October 29, 2019 at 8:13 pmTry this with a real grenade next time 😂
Owen Lavin
October 30, 2019 at 12:00 amPool
Owen Lavin
October 30, 2019 at 12:03 amNo go
Rocketiermaster
October 30, 2019 at 12:26 amSolution: Drop the other one into the pool too, and stay on land
Hype Beast
October 30, 2019 at 4:51 amDoes anyone hear the static to
Marnys_plays
October 30, 2019 at 1:26 pmOMG you took a Norwegian show Clio thanks for the Clio man
Evan Matthews
October 30, 2019 at 2:07 pm1:51 *goes between feet*
Gary O
October 30, 2019 at 2:12 pmPool of course
Nutella Cake
October 30, 2019 at 2:30 pmI thought it said how to survive a grandma blast
Minecraft Series
October 30, 2019 at 2:35 pmVater
Jags _11
October 30, 2019 at 8:22 pmJump in the pool
Eder Sánchez
October 30, 2019 at 11:40 pmWater