Soldato
- Joined
- 13 Aug 2004
- Posts
- 8,399
- Location
- England
Go on maths people, do the sums!
A.N.Other said:Rubbish tbh. How do you think stunts are done where people drop 20 or so floors. Stuntman jumps through sugarglass window and lands on a mahoosive bouncycastle-style-thingy. Another comparison is skydiving - you don't die when falling at terminal velocity, you release your chute, slowing you to almost nothing (in comparison, anyway). Bungee-jumping is the same.
If you had enough bubblewrap (a fair bit more than a metre or so I would have thought), you'd probably be fine, if a little shaken.
Actually I read somewhere that most people that jump from great heights to their death tend to die during the fall of some sort of heart attack.messiah khan said:Its not the fall that kills you, its the rapid deceleration.
Jotun said:What is it that makes this query so profound?![]()
Back when I was at school my physics teacher reckoned that if you fall a great height, it isn't actually the impact that kills you, but what happens is the first time you hit, it breaks all your bones, and you bounce up, so when you come back down again, all the broken bones will damage your internal organs, so it is the second landing which does most damage. Could have been a load of rubbish though.
A.N.Other said:Rubbish tbh. How do you think stunts are done where people drop 20 or so floors. Stuntman jumps through sugarglass window and lands on a mahoosive bouncycastle-style-thingy. Another comparison is skydiving - you don't die when falling at terminal velocity, you release your chute, slowing you to almost nothing (in comparison, anyway). Bungee-jumping is the same.
If you had enough bubblewrap (a fair bit more than a metre or so I would have thought), you'd probably be fine, if a little shaken.
Visage said:Terminal velocity is about 120mph = 54 m/s
If you're surrounded by 1m of bubble wrap, you're decelrating from 54m/s to 0m/s in a space of 1m.
Thats a g force of about 145G.
You'd die, badly.
Deiwos said:Edit: Have you actually read whats been said so far, or read what you said? I can't believe you're at Oxford tbh.
The_blue said:54m/s for a human or for everything?
Wouldn't all that wrap cause a lot of drag and lower the top speed?
Visage said:Terminal velocity is about 120mph = 54 m/s
If you're surrounded by 1m of bubble wrap, you're decelrating from 54m/s to 0m/s in a space of 1m.
Thats a g force of about 145G.
You'd die, badly.
daz said:It depends how long the bubblewrap takes to compress...
If you draw a simple graph of v versus t, assuming constant decceleration, the gradient of the graph is the decceleration. I.e. If you say that you slow from 54ms^-1 to 0 in 1 second, you're experiencing a force of approximately 5.4G.
One second is quite a long time though, so perhaps a decceleration time of 0.1 seconds is more feasible/realistic with regards to foam or bubblewrap.
Psyk said:True I suppose, you could work out the time from that.
daz said:It depends how long the bubblewrap takes to compress...
daz said:It depends how long the bubblewrap takes to compress...
If you draw a simple graph of v versus t, assuming constant decceleration, the gradient of the graph is the decceleration. I.e. If you say that you slow from 54ms^-1 to 0 in 1 second, you're experiencing a force of approximately 5.4G.
One second is quite a long time though, so perhaps a decceleration time of 0.1 seconds is more feasible/realistic with regards to foam or bubblewrap.
doofer said:
ElRazur said:You clearly missed the good ones. Speaking of ""...How about i get one more free?
EDIT
Just take a look
http://forums.overclockers.co.uk/search.php?searchid=2187639
**Points and laugh** Haaa