It is in my opinion that half of the pony ridin' jerks that think they can go 12's, couldn't travel a 1/4 mile in 12 seconds even if they were pushed off the cargo ramp of a C-130 cruising at 30,000 feet. here is a picture of Bin Ladens Mustang 5.0 to prove it!

 

12's here I come email this to your stang friends

 

you guys roll me-simply set it and forget it. whats his 60 foot time? ahh who cares anyhow-thanx fer the laugh

 

I guess nobody hardly thought this was funny?

 

Well grumpygrease, with the help of a little Calculus we can calculate his 60' time...

We know that the car will begin accelerating at a rate of 6.8 meters per second squared as soon as it is rolled out of the plane. Using integration we can calculate that the formula for his speed is 6.8 * t (where t is time). Integrating again we can get the formula for distance : 3.4 * t^2. Changing our units from meters to feet our equations become...
Acceleration : 22.31
Speed : 22.31 * t
Distance : 11.16 * t^2

Solving our distance equation for 60 feet we find that his sixty foot time is : 2.31 seconds
Solving our distance equation for 1320 feet we find his quarter mile time to be : 10.89 seconds
Plugging 10.89 seconds into our speed equation we find his trap speed to be : 242.96 fps or 165 mph.

10.89@165 is a pretty respectable 1/4 mile time...alot better than my car has ever ran anyway.

 

wowsers-even upside down? good thing he is runnin efi, cuz ive heard that carburetors let all the fuel fall out whilst inverted-thats what ive been told, anyhow.

 

not to be too picky, but i always thought it was -9.81

 

It even gets faster when you do it right

-- 60 ft time -- (assuming no wind resitance)

x = xo +Vo(t) + 1/2a(t^2)

where;

x = distance traveled = 60 ft
xo = initial displacement = 0
Vo = initial velocity = 0
a = acceleration = 32.2 ft/s-s
t = time

therefore,

60 ft = 0 + 0(t) + 1/2(32.2 ft/s-s)(t^2)

solving for t we have,

t = sqrt[ (60 ft) * (2) / (32.2 ft/s-s) ]

t = 1.93 seconds 60 ft time

-- 1/4 mile time -- (assuming no wind resistance)

0.25 mile = 1320 ft

1320 ft = 0 + 0(t) + 1/2(32.2 ft/s-s)(t^2)

Once again, solving for t we have;

t = 9.055 seconds

Soving for velocity at 1/4 mile we have

V = Vo + at

V = 0 + (32.2 ft/s-s)(9.055)

V = 291.571 ft/s = 198.80 mile/hr

Therefore,

t = 9.055 seconds at 198.80 mph 1/4 mile

 

$hit, I just knew that I would screw it up somehow. Please forgive me, it's been a while since I took calculus.

 

Dude.... I had to sit here and think for about 1/2 hour! LOL It's been about 8 years since I did anything like that.

 

ummmm, uhh, hmmm, the dog ate it, yes, that is precisely what happened. thanks guys.

 

only its not falling in a vacuum. considering the weight is in the nose, it will probably (once it stops its initial wobble) reach the terminal velocity I believe you stated but, what about adding a co-efficient for drag or is that rounded into your equation? I believe a coefficient of drag is listed in "Desk Top Dragstrip" from Motion software for a 5.0 stang. I put him upside down in the photo because in a video I saw of a car coming out of the back of a transport plane flipped a couple of times before stabilizing nose down.

 

The times that myself and QwkTrp calculated are estimates only. Mine isn't even a good estimate since I forgot the acceleration of gravity . Neither of them consider things like air resistance or terminal velocity.

 

I specifically said "assuming no wind resistance." If you've got a Cd value and weight of a Mustang I can do that too. But we'll have to assume that it falls nose first the entire way. Heck, let's change the atmosphere to Penzoil and see what happens.

I want to make a clarification too. Physicists are the ones who waste their lives solving an exact solution of some odd scenario that some math student 50 years down the road will do as a 10 minute homework assignment. I prefer engineering... close enough is good enough. I'd like to solve more than 1 or 2 problems in my lifetime.

 

I think we can all live with that. I like the penzoil idea as a possibility, but isn't that stuff hard to breathe?

 

I think yall have to much time on your hands to figure out all that stuff!!

Damn go do some thinking on you cars and make them faster.
LOL
j/k

 

No amount of thinking will change the fact that my unfinished project is stalled due to lack of money https://www.thirdgen.org/rides/index...ew&rideid=3980

 

You know what's even more impressive than that 1/4 mile time? It's going to go from 162 (or whatever) to 0 in like 12 inches at the end of the strip!!! Beats the crap out of my ride.

 

Yeah, that sudden stop at the end of the track is a bit of a nasty one .

 

my definition of "co-efficient of drag" 2003=mustangs+assembly lines divided by 2003/no f-body

 

Let me be the first to say please post more updates on the progress of this car. That is an amazing chassis so far and I'd like to see the play by play on that coming together. As for the money, sorry mine is also on hold until after i get done my spring term at school!!

Matt

 

thanks for the support, but the irony is that I am half owner of a speed shop have little time for building my own ride and little money to invest in parts (you cant just give yourself a blower or heads and call it advertising there is another name for it though; "imbezzlement".) it is frowned upon but dont lose heart because the light at the other end of the tunnel has finally just come back on.