Dang, Corvettes a lot safer than I thought...

[CosmicCowboy]

Rigg's air bags went off at 127mph when it blew up the Rav4 and he and his girlfriend both walked away. Thats crazy.

[RandomGuy]

Rigg's air bags went off at 127mph when it blew up the Rav4 and he and his girlfriend both walked away. Thats crazy.

Ruggs and the car he hit were going in the same direction. You can estimate the speed of the car he hit by looking at the speed limit sign in the picture below.



Given most people tend to drive 5mph over the speed limit, that gives a speed of 50mph with the mitigating factor that the vehicle they hit was able to accelerate a bit during the milliseconds of impact, any little bit that extends the length of time of energy transfer makes a difference (look up crumple zones).

77 mph crash only has 36% of the kinetic energy of a 127mph crash. (1/2 m * v^2) (mass cancels out, so just square the velocity to re-calc) https://www.calculatorsoup.com/calcu...cs/kinetic.php

A lot of the energy also sort of went UNDER the car they impacted, further making it a bit less severe than hitting a stationary brick wall.

Sucks for the car they hit, because that is where the gas tank is, and I would guess that it almost certainly ruptured, hence the fire. Witnesses say they heard screaming from inside the vehicle.

[RandomGuy]

https://www.dailymail.co.uk/news/art...ounds-hit.html

This is what hitting a stationary solid object at 120mph looks like. That is how you know the corvette and the car were traveling in the same direction.

[DarrinS]

Or, they can read the event data recorder. Durrr

Also, striking a barrier is a lot different than striking another vehicle.

Maybe don't pretend to be an expert on everything, RG.


Lol, using the speed limit sign.

[baseline bum]

Hope that pos has to do 20 for that.

[Thread]

Hope that pos has to do 20 for that.

He's already free and searching for Carr and love, lots of it.

[DarrinS]

According to an arrest report, Las Vegas Metropolitan Police analyzed the airbag control module from Ruggs' Corvette and determined the car was moving at 156 mph 2.5 seconds before the crash, "prior to algorithm enabled." It was recorded at 127 mph "at time zero," around the moment of the crash.

Yep

[spurraider21]

but people have died even when airbags have gone off so stop pretending they can prevent death

[boutons_deux]

Hope that pos has to do 20 for that.

vehicular homicide by a DUI black in AL?

[Thread]

vehicular homicide by a DUI black in AL?

...nonetheless he'll be feted and loved. Lot's of it.

[pgardn]

Or, they can read the event data recorder. Durrr

Also, striking a barrier is a lot different than striking another vehicle.

Maybe don't pretend to be an expert on everything, RG.


Lol, using the speed limit sign.

This is exactly the point he was trying to make I thought?
Ruggs would be absolutely dead if it had been a barrier.

And the speed limit sign is a good way of "approximating" the speed the OTHER car was going.
Whats wrong with this?

So an airbag control module is the same as an event recording device. What was the avg. acceleration of both cars during the collision?
I would like to know just for the of it.

[DarrinS]

This is exactly the point he was trying to make I thought?
Ruggs would be absolutely dead if it had been a barrier.

And the speed limit sign is a good way of "approximating" the speed the OTHER car was going.
Whats wrong with this?

So an airbag control module is the same as an event recording device. What was the avg. acceleration of both cars during the collision?
I would like to know just for the of it.

ACM == EDR (same thing, different name)

Toyota RAV4 has one, too.

They both record pre impact speed and Delta-V (change in velocity).

Even if you only have data for the corvette, you can calculate speed and Delta-V for the Toyota using conservation of momentum.

[pgardn]

Rigg's air bags went off at 127mph when it blew up the Rav4 and he and his girlfriend both walked away. Thats crazy.

Saw another picture of his car.
This is exactly how the front of the car is supposed to look after a bad crash. It dissipated a of a lot of energy by folding up like it did and leaving the "cab" intact. Chevy should use this as a model for how safe their Corvettes are so we all can go driving city streets at 156 mph.
This is seriously fd up.
156 mph on a city street... The only way my truck could reach that kind of speed would be falling off a cliff.

And Ruggs had a friend who died in a car he was supposed to be in? If the dude has any conscience he will be fd up for the rest of his life. Dont think I would want to live after having to endure this.

This will not go over well either:
Mr. Rodriguez did not have a good night either. Or for possibly the rest of his life.
She may have not died immediately. Totally fd up.

Alexander Hart, a security guard at nearby condo complex, "heard screaming coming from the area of the Toyota so he went to render aid there," according to a report by LVMPD Detective Dwaine McCuistion.
"He attempted to extract the driver but was soon overcome with smoke and heat from the flames," McCuistion wrote.
Motorist Tony Rodriguez was on Spring Valley Parkway when he pulled over to Tintor's burning car, he told police.
"Mr. Rodriguez stated he tried to extract the driver of the Toyota as it was on fire," according to McCuistion's report.
"He stated he grabbed the driver and tried to pull her out of the car but she was stuck or pinned in the car. Mr. Rodriguez then explained how he was overcome with smoke and heat from the fire and had to back away from the car."

[DarrinS]

vehicular homicide by a DUI black in AL?

AL?

[pgardn]

ACM == EDR (same thing, different name)

Toyota RAV4 has one, too.

They both record pre impact speed and Delta-V (change in velocity).

Even if you only have data for the corvette, you can calculate speed and Delta-V for the Toyota using conservation of momentum.

No you cant use just cons. of momentum. That can only be used if the only force present is between the cars. Quite clearly friction brought them both to a halt. So there is some other data needed. The time in which the impact took place. That should be a very short moment and only include the time the where the cars were in contact. Would work with a real EVENT recorder as I understand it. But yeah they might be the same thing so time should be in there. I know they can reproduce these things for wrecks. did you find the time they were in contact because you said you found delta V? (and even during this time friction with the road is still a factor but they can work with it)

[DarrinS]

No you cant use just cons. of momentum. That can only be used if the only force present is between the cars. Quite clearly friction brought them both to a halt. So there is some other data needed. The time in which the impact took place. That should be a very short moment and only include the time the where the cars were in contact. I know they can reproduce these things for wrecks. did you find the time they were in contact because you said you found delta V? (and even during this time friction with the road is still a factor but they can work with it)

friction

M1 * DV1 = M2 * DV2

No time in this eq.

[pgardn]

friction

M1 * DV1 = M2 * DV2

No time in this eq.

Darrin...

YOU NEED TIME. The equation the conservation of momentum came from is F*t = change in momentum of either car. If the only F (force) is the contact between the cars, then you can assume both cars "felt" the same impact (F*t) and thus you can DERIVE the conservation of momentum.

The conservation of momentum works fully if the ONLY force is the contact between the cars.
Friction with the road is present the entire time on both of the cars.






​​

[pgardn]

So Darrin you found delta v apparently. What was the time the cars where estimated to be in contact. I would just like to know what kind of accelerations the occupants felt. Thats all. So you got a link or time? Thanks.

[pgardn]

friction

M1 * DV1 = M2 * DV2

No time in this eq.

And that equation is incorrect. You need two V's for both cars. Before and after impact (only between the cars) once they are not touching there is no force they are applying to each other and friction with the road brings them to a halt.

[Will Hunting]

vehicular homicide by a DUI black in AL?

Are you trying to defend the guy for killing somebody due to sheer recklessness? I can't tell.

[DarrinS]

Darrin...

YOU NEED TIME. The equation the conservation of momentum came from is F*t = change in momentum of either car. If the only F (force) is the contact between the cars, then you can assume both cars "felt" the same impact (F*t) and thus you can DERIVE the conservation of momentum.

The conservation of momentum works fully if the ONLY force is the contact between the cars.
Friction with the road is present the entire time on both of the cars.






​​

Friction forces are negligible compared to collision force

[Will Hunting]

How did such a benign thread turn into an argument so quickly

[pgardn]

Friction forces are negligible compared to collision force

Okay we will go with that.

What was the time the cars were impacting each other?

[DarrinS]

And that equation is incorrect. You need two V's for both cars. Before and after impact (only between the cars) once they are not touching there is no force they are applying to each other and friction with the road brings them to a halt.

The delta is the change, i.e. before and after.

[DarrinS]

Okay we will go with that.

What was the time the cars were impacting each other?

It does not matter. The delta-v is measure of collision severity and a surrogate measure for injury potential.

Collision duration is typically around 120 msec. I suspect slightly longer for this crash.