Brain Teasers
Brain Teasers Trivia Mentalrobics Games Community
Personal Links
Submit a Teaser
Your Favorites
Your Watchlist
Browse Teasers
All

Cryptography
Group
Language
Letter-Equations
Logic
Logic-Grid
Math
Mystery
Optical-Illusions
Other
Probability
Rebus
Riddle
Science
Series
Situation
Trick
Trivia

Random
Daily Teasers
Search Teasers

Advanced Search
Add to Google Add to del.icio.us

More ways to get Braingle...

Madadian Assassin

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#19579
Fun:*** (2.67)
Difficulty:*** (2.84)
Category:Science
Submitted By:Mad-AdeAhu***
Corrected By:cnmne

 

 

 



In Madadia, a rather strange and misguided assassin, from his hidden position, uses a high-powered rifle to shoot someone in the foot from 50 feet away. The bullet travels at 1300 feet per second. Both the person being shot at and the assassin are at sea level. What will be the first evidence to the person of the attack?




What Next?

  
  

See another brain teaser just like this one...

Or, just get a random brain teaser

If you become a registered user you can vote on this brain teaser, keep track of
which ones you have seen, and even make your own.

 



Comments

just_phil
Dec 01, 2004

First, how long does it take the nerve impulses to travel from his ears to his brain? Second, there would still be evidence to the person from the foot first, even if not the person's brain; though that's really one for the philosophers.
bluetwo*
Dec 01, 2004

answer is obvious - it's the pain in the foot. no assassin worth his salt would forget to use a silencer!
I_am_the_Omega**
Dec 16, 2004

My thinking exactly... I'm pretty sure it would take just as long (if not longer..) for the sound to be interpreted by his brain..

Really, though, I could be 100% wrong, but are nerves really straight up and down like that? I mean, aren't they in bundles, and wind all around..? I'm pretty sure that from head to foot, there is not only 5 feet of nerves.. more like 50 feet (just a guess, I have no real idea).
I_am_the_Omega**
Dec 16, 2004

My thinking exactly... I'm pretty sure it would take just as long (if not longer..) for the sound to be interpreted by his brain..

Really, though, I could be 100% wrong, but are nerves really straight up and down like that? I mean, aren't they in bundles, and wind all around..? I'm pretty sure that from head to foot, there is not only 5 feet of nerves.. more like 50 feet (just a guess, I have no real idea).
I_am_the_Omega**
Dec 16, 2004

My thinking exactly... I'm pretty sure it would take just as long (if not longer..) for the sound to be interpreted by his brain..

Really, though, I could be 100% wrong, but are nerves really straight up and down like that? I mean, aren't they in bundles, and wind all around..? I'm pretty sure that from head to foot, there is not only 5 feet of nerves.. more like 50 feet (just a guess, I have no real idea).
GamerDudeMan
Dec 27, 2004

What about if he was looking at his foot when he got shot and he saw that he got shot?
Cardshark812*
Jan 06, 2005

Why do we assume that a pain impulse travels at the speed of sound? I highly doubt pain happens to travel at the exact speed of sound, since it is not traveling in waves as such. The pain in the foot would be the first thing he noticed.
GTregay*us*
Jan 21, 2005

Mad Ade was actually saying pain travels slower than the speed of sound (330 ft/s vs 1129 ft/s). He was merely showing that the pain would take longer to reach his brain. However, one thing he didn\'t consider is that the impact of the bullet with the victim\'s foot would also make a sound. The sound of the bullet\'s impact with the victim\'s foot would reach his ears before the shot\'s sound, even if the shot is fired from ear level, provided the victim\'s ears are no more than about 6\'4\" from his feet (if I figured this out right).
coastcomfort
Jan 24, 2005

I Omega. Nerve fibers are straight, excepting the route around his foot and hip to spine but relatively straight. You may be thinking of DNA.
(user deleted)
Jan 26, 2005

Eggggggwhat?????

-goes back to the "Trick" Teasers-
MrLarsonCHS*
Feb 24, 2005

Actually it's very possible that the first evidence would be a supersonic soundwave cone. This a very visible effects of traveling past the speed of sound.
Palsha**
Mar 28, 2005

Tough teaser, but liked it!
chidam11Ain*
Apr 03, 2005

Gr8 1 i like it very much
psychedelictoad**
Apr 09, 2005

stevier316*
Apr 15, 2005

Maybe it is just me, but the science braingles are quite easy.
onlyeeyore**
Jun 07, 2005

I think I'm in the wrong league with comments like those above, but I liked it and am happy to accept his answer. (Personally missed it, tho!)
norcekrius*
Jun 29, 2005

How about the autonomous nervous system? According to my high-school biology, the fastest nerve reaction would travel from the injured tarsal nerve, up to the iliac bundle (nerves at the base of the spinal cord). Here, the autonomous bundle would recognize the pain and send contraction signals to the leg muscles, and the first to fire would be the femoral muscles (quadriceps and friends).
This might not change the ultimate answer, depending on how long it takes the victim to realize that his leg has moved. If he senses it visually, we've shortened the critical path here by about 20% of the nervous transit time. If he senses the movement through physical change transmitted through his body (the "self-quake" as his leg jerks, probably felt first through the cochlea's balance system), then I don't know enough to estimate the transit time. I'd guess it to be on the close order of the speed of sound through water, but my error factor is larger than the difference in the two transit figures presented in the teaser's answer.
froggyggAus*
Jul 12, 2005

Now that norcekri has finished giving us another of his educational lectures as proof of his knowledge, I will comment on the teaser.

I enjoyed this teaser in the manner it was meant for - enjoyment. Thanks for the time well spent.
(user deleted)
Sep 12, 2005

too many variables to feel confident in either answer
bookworm91**
Nov 09, 2005

actually, with an intense traumatic pain, the brain is extremely slow in recognizing it. its like a safety feature. so they guy probably would hear the gunshot first, then feel the pain (if he feels it at all). i didnt get it, but it makes sense to hear then feel. i think.
achnid*us*
Nov 20, 2005

on the pain issue it depends on the person. I do have to say that a high powered rifle at 50ft will probably take off his entire foot and jerk his entire leg and probly jerk his whole body about. I would say that he would notice that a lot more than the gun shot.

In fact if that happened to me I might not even notice the sound seing in about 2 seconds I would be partly spun around an fallen on the ground with intense pain in my foot.

Oh and anny ASSASSIN would use a silencer which would make a quiet pfft sound. also ASSASSINS generaly use 50cal rifles definately taking off the foot and more regardless of how miss guided he is.
rkaalandAus*
Dec 10, 2005

Well! I ..... think it would have been ...... Don't know!!! Good teaser and debate though
metallicmanAus*
Dec 15, 2005

Now that everyone tried to demoralize this teaser, I thought it was good. I'd like to say to everyone who said the noise of the bullet reached his ear first that it wouldn't be as noticable in the .00 whatever seconds. Also even if his foot was ripped off and it exploded I think he wouldn't spin around and do whatever in a fraction of a second. It was great, another good teaser from Mad ade
sporf**
Dec 26, 2005

Ouch, that's hard.

Too many numbers and whatnot.
t4mtAcn*
Feb 07, 2007

I'm only 12 and that was a piece of my grandpa's chocolate fudge!
AndrewWalkerAfi*
Jun 25, 2008

1129 feet per second at 1300 feet away that would be cloder to .8 seconds to reach the ears, I may read it wrong though



Back to Top
   



Users in Chat : None 

Online Now: 12 users and 366 guests

Copyright © 1999-2014 | Updates | FAQ | RSS | Widgets | Links | Green | Subscribe | Contact | Privacy | Conditions | Advertise

Custom Search





Sign In A Create a free account