HARD LANDING

[pegase]

pagir wrote:
Well... Jump* from the first story of a building... You'll reach the ground in about (or more) than one second... Ouch!

Pagir

* Well... DO NOT Jump.

I was curious to figure out the falling height aquivalence and found this:
http://dispourquoipapa.free.fr/sciences/sc0015.htm

On peut très facilement calculer la vitesse de chute d’un objet (sans tenir compte de la résistance de l’air) en utilisant la formule
suivante :

V² = 2 * g * h

Avec :

V = Vitesse de chute en mètres par seconde
g = gravité (environ 9.81 pour la terre)
h = hauteur de la chute en mètre

Par exemple, un objet tombe d’une hauteur de 100 mètres, la vitesse est donc de :
V² = 2 * 9.81 * 100 = 1962
V = racine de 1962 = 44.3 m/s soit 159 km/h

As we want to get the height for a known speed, let's write

h = V²/(2*g)
1) transform your feet/min into meter/seconds (devide by 200 will do the job) so 840 feet/min is barely 4.2 m/s
2) V² = 17.64
3) h = 17.64/(2*9.81) = 0.90m = 3 feets (a bit less)

So, an height of almost 3 feets looks small for a jump reception on our feets but for a safe jump reception on our bottom, aTHICK pilow is
MANDATORY (please don't experiment with your own a$$ )

A jump from a first storey (let's tell 3 meters) will rsult (we can neglect air resistance) in a speed of

sqrt(2*9.91*3) = 7.67 m/s = 1500 feets/min

We are much more fragile than what we think...

[pagir]

Merci pour le site, Pegase!

Pagir

[CDR]

This program will make you quit flying and find another hobby.
LMAO
CDR