starktower
62767
1689
154
Oct 26, 2016 11:51 AM
starktower
62767
1689
154
dudemeister2000
neat
BeStrongClarence
revooms
This again
thatonekidfromhighschool
What would happen if the cannon shot while the car was moving backwards at 50mph? Sorry for being stupid
BasicHatedFrenchGuy
fedepunchis
This has been reposted hundreds of times...
DoctorNerdyPants
This is half a mile from my parents' house! Whoo, Alameda!
AeonQuasars
So it IS possible to fire a person in a planecrash just right before it hit the ground, if the speed you are shot out equal falling speed.
Artebudz
WontSomeonePleaseThinkOfTheChildren
Port of Oakland.
AndIHaveNoIdeaWhatToPutHere
IfmynameisDICKdoesthatmakemeNSFW
Lol savage af
Golduneye
Just a normal day at the office
JackMolotov
Username checks out
knotshittingyou
it took me a couple of seconds to realise there's only one human in that gif
Oak63
Humans? My boy these are top quality scientists!
SnookyDoWork
So what would happen if you turned the cannon towards the front and fired? Would the ball leave the barrel?
serakaida
Can we please FUCKING stop with this one. We get it. It has no directional momentum.
smellslikeworldhunger
Goddamn it I fucking love this site.
soulscythe
Has anyone NOT seen mythbusters yet? If they have, I can imagine they have watched basically every episode 30 times, so why is this news?
warick
Crazy how nature do that.
VeryMoistTowelettes
Neature
yattadog
That's some Wile E. Coyote shit you got there.
Stache13081
Cool. Now fire a truck out of a cannon moving at 50mph around a volleeyball!
[deleted]
[deleted]
Stache13081
Yes! Well, maybe just a little.
McWinnie
That moment when the physics clip you watch in class today ends up being a gif on imgur the same day o.o
CitizenBBrown
That's one of the most disappointing conclusions I've ever seen.
TheAmazingAnalCavity
Damn.... Another repost
Haagis
imgurnaregretthis
One step closer to the intuition behind the theory of relativity!
mustang2733
Does the same thing happen if you are a rear gunner on a bomber like during wwII?
spudcosmic
Yes the bullets will end up going a bit slower but they won't stop, they are far faster than the plane.
mustang2733
But that would reduce its armor piercing capability wouldn't it?
STOPSHOPPINGFAKEARSES
I'm more impressed at how they timed it to be exactly halfway along the backboard
sandmannet
It's called "failing x amounts of times until you get it right" :)
[deleted]
[deleted]
explodjunk
Your sentence gave me cancer.
monkeyman321
Thats a good observation. Could be a proximity trigger aimed to the right? Or just a bunch of attempts.
kidswat
As an engineer, "well yeah."
NerdN1
It is still cool seeing this common high school physics problem play out in the real world.
BANANAFLAKE
I lost a lot of interest when the starting testing things that were mathematically obvious. Birds in the truck trailer for example.
whiteat1
I hate this response. most people think this is cool not bc they don't understand it or bc its unexpected it's just fun seeing it in action
SimenHellesund
come on, you have to admit that the near exact cancellation is very impressive.
copsdoesntstarttillfour
What type of engineer
TheRoyalSpoon
Doesn't really matter, as basic newtonian physics is a fundamental course in all concentrations
imgurnaregretthis
I dunno, I'm always still a little bit in awe of how well made the universe is.
spudcosmic
Just the laws of physics making sure everything is the most efficient naturally.
sveltechristmasman
Yea but a jet on a treadmill will definitely take off
tonyferry
With what lift?
VikingsAreNinjaPirates
It doesn't matter how fast the ground is moving since the wheels don't propel it. It only matters how fast it moves through the air.
VikingsAreNinjaPirates
https://www.youtube.com/watch?v=YORCk1BN7QY
MyNameIsJesusAndIStealHubcapsFromCars
treadmill don't matter, thrust is generated by the jet itself. the wheels just roll at whatever speed is jet's momentum+ground movement.
Zoddom
Yeah because the wheels of the landing gear are freely able to roll and dont transmit any thrust . Treadmill 100mph+Jet 101mph=Wheel 201mph.
twohearteddoctor
As a person learning physics atm, "i just learned something similar so yeah"
YukonSpud
As someone who deals with engineers fuck ups all the time, "well yeah."
wlfman
my exact thought: "yeah, because physics"
HorseGirlErection
Are you suggesting that an engineering degree is required for this to make sense?
Valkyr1987
Try explaining it to an idiot and you will understand
Noughmad
As a physicist, "well duh". Also as a physicist, I still wonder how they got the speeds to match so precisely.
Ensano
Trial and error. They spent an entire day repeating this exercise. The math works obviously but it's way too hard to be that precise
UnpopularOpinionPuffinPersonified
As a television viewer, the answer is several attempts.
mediocrelygoodlooking
As somebody that failed algebra-1 three times, why do I keep canceling my xs out? Who is foil? The fuck is a squadratic equestrian? Shit
WhiterunWarriorProject
.
LannistersSendTheirRetards
How have you made it this far in life without using squadratic equestrian
Kappalicious
X equals negative b...
FirstWorldAnarchist
#SquadraticEquestrianGoals
longoriaisaiah
I think thats when a group of horses goes out on the town
mediocrelygoodlooking
We're just here for a good tihehehhehme
mikeo
Would the ball go twice as fast if it was facing the other way around?
imgurnaregretthis
Only in a vacuum!
Potaterzpotateyo
Yep. If you are walking at 5 on a train going 50 you would be going 55 if walking the direction the train is going and 45 if going opposite.
Astrogod07
Yes
gakio12
However, due to the horrible aerodynamics of a ball, it will quickly decelerate making it difficult to capture like this.
Astrogod07
We must test it in space!
TitaniumMonkeyBalls
Ok, now here's the fucky part. What if the truck is going over half the speed of light and fires the ball at over half the speed of light?
NoMoneyManyProblems
That's not fucky at all, just do the relativistic addition of velocities
TitaniumMonkeyBalls
since nothing can go faster than speed of light, and simple addition in this case would, what do you mean by 'relativistic addition'?
NoMoneyManyProblems
v'=(v1+v2)/(1+(v1*v2)/c^2)
YaySpaceAndStuff
What would happen if you went the speed of light and shined a light backwards?
Samagon
Stuff. Stuff would happen.
imgurnaregretthis
(2/2) You might argue about the time you spent watching it, though!
ForrestIndustries
It's too early to think about this.
imgurnaregretthis
Congratulations. You now have the intuition behind the theory of relativity!
imgurnaregretthis
(1/2) C is constant for all reference frames. Everyone would see the light moving away from you at the speed of light.
scaredanddelusionalmonkey
light bikes from tron?
tardis63
Special relativity happens
swatch
Actual scientist here, you would in fact get static light rays, and that's what they use in SW7 when Kylo Ren stops lasers.
cajunbrewer
http://imgur.com/Fi8uNLB
Nineteenletterslong
The light from your light source will always go at the speed of light in your reference frame. Any light reflected from it will be...
Nineteenletterslong
...Doppler shifted to very high frequencies, towards the ultraviolet or beyond.
imgurnaregretthis
Red shifted I think?
GreaterDog
If it's refleted from a surface approaching you. If you're shining it backwards and it reflects, it'll red-shift
Nineteenletterslong
Right, this is correct for shining the light backwards.
YaySpaceAndStuff
What would that look like?
Nineteenletterslong
Well, you can't see ultraviolet or beyond, so the reflections would not be visible. But objects that are not moving, relative to you, would
Nineteenletterslong
would be contracted along the x-axis, and would be rotated. For example, passing a human, they would be thin like a pole, and you would see
Higure
You can't go at the speed of light. But you can get as close as you want if you spend enough energy.
imgurnaregretthis
You can you just have to lose some weight. Like, all of it.
AssBat
So... you have to become light-er?
Higure
But then you can't shine light backwards. You have become the light. Wait, is that why light is called light? Because it has no mass?
imgurnaregretthis
Haha. I think we called it that before discovering photons. Unless... Time traveling aliens.... Never mind.
WhiteTern
Yes time traveling aliens.
WhiteTern
I'm not a time traveling alien btw.... ;)