[DeTomaso] Brick Walls Re: speaking of wheels falling off---

Asa Jay Laughton asajay at asajay.com
Tue Aug 24 22:10:55 EDT 2010


  In the case of jumping the wrong way... probably was.

Asa Jay
<No squirrels were harmed in the making of this email>

Asa Jay Laughton, MSgt, USAFR, Retired
&  Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com


On 8/24/2010 17:46, Curt Hall wrote:
> would that be a gay squirrel?
>
> --- On Tue, 8/24/10, Asa Jay Laughton<asajay at asajay.com>  wrote:
>
>
> From: Asa Jay Laughton<asajay at asajay.com>
> Subject: [DeTomaso] Brick Walls Re: speaking of wheels falling off---
> To: detomaso at realbig.com
> Date: Tuesday, August 24, 2010, 5:42 PM
>
>
> Okay,
> So if it were -two- brick walls, each moving at 60 MPH at the other, 
> what color is the squirrel who is trying to jump off just before they 
> hit?  And how fast will he be going when he jumps?
>
> Asa jay
> <lordy I feel I'm going to regret that one>
>
>
> Quoting wkooiman at earthlink.net:
>
>> There's nothing magical about a "brick" wall.  The term brick wall   
>> is used to describe a fixed immovable wall.
>>
>> Immovable means when you hit the wall at 60mph, it pushes back with   
>> an equivalent force.
>>
>> If your car weighs 3,000 lbs and you hit a fixed immovable wall at   
>> 60mph, the damage to your car is exactly the same as if you hit a   
>> stack of bricks head-on that was moving towards you at 60mph -   
>> assuming the stack of bricks weighs 3,000 lbs.
>>
>> It's also exactly the same as what would happen if two identical   
>> cars hit head-on, with each one going 60mph.  (as proven on Myth   
>> Busters)
>>
>> Of course, there are many assumptions.  For instance, there's no   
>> such thing as an immovable wall.  It will move some, but the   
>> assumption is the movement is so small, we can ignore it.  Also,   
>> crumple zones, velocity (vectors), and so on.
>>
>> Keep in mind, I don't have a PhD in Physics.  I'm just stating how I 
>>    think it would work.
>>
>> -----Original Message-----
>>> From: Tony DiGiovanna<tonydigi at optonline.net>
>>> Sent: Aug 24, 2010 6:34 PM
>>> To: wkooiman at earthlink.net, 'boyd casey'<boyd411 at gmail.com>
>>> Cc: 'Asa Jay Laughton'<asajay at asajay.com>, detomaso at realbig.com
>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>
>>> No.  I didn't say 120.
>>> Once the brick wall is moving, it is no longer the classical fixed   
>>> "brick wall."  It's another moving object of mass.
>>>
>>> -----Original Message-----
>>> From: wkooiman at earthlink.net [mailto:wkooiman at earthlink.net]
>>> Sent: Monday, August 23, 2010 8:35 PM
>>> To: boyd casey; Tony DiGiovanna
>>> Cc: Asa Jay Laughton; detomaso at realbig.com
>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>
>>> No.  (not 120mph)
>>>
>>> There's nothing magical about a brick wall, moving or not.  The   
>>> assumption, though, is the brick wall is not movable, so when you   
>>> hit it, you must absorb 60mph worth of kinetic energy.
>>>
>>> A head-on collision simulates hitting a brick wall.  You are forced 
>>>    to absorb all of your kinetic energy (probably 1/2 of the total).
>>>
>>> Remember, when you push on a wall, it pushes back with the same force.
>>>
>>> I'm assuming the same is true with kinetic energy.  When you hit a   
>>> wall at 60mph, it hits you back with the same amount of energy.  It 
>>>    doesn't matter if the wall is moving or not.
>>>
>>> -----Original Message-----
>>>> From: boyd casey<boyd411 at gmail.com>
>>>> Sent: Aug 23, 2010 6:08 PM
>>>> To: Tony DiGiovanna<tonydigi at optonline.net>
>>>> Cc: Asa Jay Laughton<asajay at asajay.com>, detomaso at realbig.com
>>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>>
>>>> There almost as bad as those trees that are always jumping out and hitting
>>>> drunk drivers!
>>>> Boyd
>>>>
>>>> On Mon, Aug 23, 2010 at 6:50 PM, Tony DiGiovanna
>>>> <tonydigi at optonline.net>wrote:
>>>>
>>>>> Depends on the Mass of the Brick wall.
>>>>> If the wall is same mass as car, then yes.
>>>>> If the wall is more massive than car, then worse.
>>>>>
>>>>> I hate when massive brick walls drive the wrong way on the Interstate.
>>>>>
>>>>> -----Original Message-----
>>>>> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
>>>>> On
>>>>> Behalf Of Asa Jay Laughton
>>>>> Sent: Monday, August 23, 2010 3:12 PM
>>>>> To: detomaso at realbig.com
>>>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>>>
>>>>> My stirring spoon seems to be stuck in the pot...
>>>>>
>>>>> So, if a brick wall were traveling at 60 MPH, and you were traveling
>>>>> at 60 MPH and had a head on collision, would -that- be a collision at
>>>>> 120 MPH?
>>>>>
>>>>>
>>>>> Asa Jay
>>>>> :)
>>>>>
>>>>>
>>>>> Quoting Julian Kift<julian_kift at hotmail.com>:
>>>>>
>>>>>> A car is designed to absorb impact in a crash through a 'crush'
>>>>>> zone, what you see in the two car head on are both cars deforming
>>>>>> and disipating the force of the impact equally as they are designed
>>>>>> to do. On the other hand a brick wall is.... well a brick wall and
>>>>>> the single car has to abosrb and disipate all the energy so I would
>>>>>> expect the two scenarios to be very similar in resulting damage.
>>>>>>
>>>>>> Try propelling two bricks (or rigid objects) at each other at 60 mph
>>>>>>    and see if they react the same as a singel brick propelled at the
>>>>>> wall.....
>>>>>>
>>>>>> Julian
>>>>>>
>>>>>>
>>>>>>> From: wkooiman at earthlink.net
>>>>>>> To: detomaso at realbig.com
>>>>>>> Date: Sun, 22 Aug 2010 20:16:54 -0500
>>>>>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>>>>>
>>>>>>> Slightly off topic, but a head-on collision isn't car1 speed + car2
>>>>> speed.
>>>>>>> 60mph car head-on with 60mph car isn't like hitting a wall at
>>>>> 120mph. It
>>>>>>> was proven very dramatically on myth busters.
>>>>>>>
>>>>>>> I believe it's more complicated than that. It's has to do with
>>>>>    the total
>>>>>>> force. Car1 speed * car1 weight + car2 speed * car2 weight = total
>>>>> force.
>>>>>>> Force applied to car1 = total force/car1 weight.
>>>>>>> Force applied to car2 = total force/car2 weight.
>>>>>>>
>>>>>>> It they're both going 60mph and they're both the same weight, it's just
>>>>> like
>>>>>>> they both hit a wall going 60mph. (assuming they head dead-on, glancing
>>>>>>> blows change everything)
>>>>>>>
>>>>>>> If car1 is 3,000 lbs and car2 is 30,000 lbs (big rig), car1 is going to
>>>>> be
>>>>>>> much worse than head-on, and the 18-wheeler will have much less damage.
>>>>>>>
>>>>>>> I just made up those formulas, but I bet they're correct or at least
>>>>> close.
>>>>>>> BTW, the wheel that went through the windshield was probably going
>>>>>>> effectively 120mph, simply because the windshield wouldn't have slowed
>>>>> the
>>>>>>> tire down much at all.
>>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com
>>>>> ]
>>>>> On
>>>>>>> Behalf Of boyd casey
>>>>>>> Sent: Sunday, August 22, 2010 7:11 PM
>>>>>>> To: Art Stephens
>>>>>>> Cc: JDeRyke at aol.com; detomaso at realbig.com
>>>>>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>>>>>
>>>>>>> I have heard of several incidents where wheels came off of vehicles and
>>>>> the
>>>>>>> vehicle that lost the wheel did ok but the errant wheel killed the
>>>>> driver
>>>>> of
>>>>>>> the car it hit. This has happened more then once in recent memory. The
>>>>> one I
>>>>>>> remember more clearly the wheel cam e off a car on an interstate and
>>>>> crossed
>>>>>>> the median. As you know the speed in a head on is car +car b + speed of
>>>>>>> impact so a car traveling at 60 mph and a loose wheel traveling at 60
>>>>> mph
>>>>>>> and bouncing through the windshield and landing smack in
>>>>> someones lap at
>>>>> 120
>>>>>>> mph effective speed, it's not a pretty picture!. When I was in college
>>>>>>> (Loyola in New Orleans) I was driving a VW "Super Bug" from my fathers
>>>>> Ford
>>>>>>> dealerships used car lot when I noticed a VW wheel Passing me on the
>>>>> left!
>>>>>>> The left rear wheel came off and the next thing I knew I was sliding to
>>>>> a
>>>>>>> stop and the wheel was making great time on it's own! Luckily it didn't
>>>>> hit
>>>>>>> anyone. I was always having problems with the cars that I was given to
>>>>> drive
>>>>>>> from the cheapest used car inventory. And every time I had a problem I
>>>>> got
>>>>>>> downgraded to an even cheaper car until finally I was relegated to the
>>>>>>> status of pedestrian!
>>>>>>> Boyd
>>>>>>>
>>>>>>> On Sun, Aug 22, 2010 at 6:43 PM, Art Stephens
>>>>>>> <artstephens at verizon.net>wrote:
>>>>>>>
>>>>>>>> When I crashed my car, one of the rear wheels with broken upright,
>>>>> half
>>>>>>>> shaft and disc brake assembly attached, was found days later in a
>>>>> gully
>>>>>>>> about a quarter mile past the car!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ----- Original Message -----
>>>>>>>> From:<JDeRyke at aol.com>
>>>>>>>> To:<detomaso at realbig.com>
>>>>>>>> Sent: Sunday, August 22, 2010 12:15 PM
>>>>>>>> Subject: Re: [DeTomaso] speaking of wheels falling off---
>>>>>>>>
>>>>>>>>
>>>>>>>>> I've also had a 'memorable' experience with OTHER PEOPLE'S wheels
>>>>>>> falling
>>>>>>>>> off. Commuting to work one morning in N CA in my modified
>>>>> Corvair, a
>>>>>>>>> cement
>>>>>>>>> pumper truck on its way to a job site broke a rear axle flange off,
>>>>>>>>> freeing a
>>>>>>>>> gigantic 'flotation' tire, wheel&  brake drum at 50 mph on the
>>>>> freeway.
>>>>>>>> He
>>>>>>>>> was some ways behind me and I saw the accident in my
>>>>> mirrors, but as
>>>>>>> race
>>>>>>>>> announcers say, in heavy traffic 'I had nowhere to go' except to
>>>>> lean
>>>>>>>>> away.
>>>>>>>>> The 250-lb assembly bounced off guard rails and hit my drivers door
>>>>> a
>>>>>>>>> glancing
>>>>>>>>> blow that knocked the 2500-lb car sideways half a lane, in spite of
>>>>> the
>>>>>>>>> traction from the same size tires I run on the Pantera. The wheel
>>>>>>> finally
>>>>>>>>> stopped in the median-strip Oleander bushes. Lucky me- I was the
>>>>> only
>>>>>>> car
>>>>>>>>> it hit!
>>>>>>>>> The dent in my car was a foot deep but luckily was confined only to
>>>>> the
>>>>>>>>> door.
>>>>>>>>> A gigantic traffic jam occurred between my banged up car and the
>>>>>>> concrete
>>>>>>>>> truck tipped at an angle across 2 lanes. Once he saw I wasn't hurt
>>>>> or
>>>>>>>>> angry,
>>>>>>>>> the truck driver (also the business owner!) was very apologetic but
>>>>> was
>>>>>>>>> MUCH
>>>>>>>>> more worried about the full load of concrete he was to have
>>>>> processed,
>>>>>>>>> rapidly setting up behind us in a second truck (pre-cell phone
>>>>> days).
>>>>> 2
>>>>>>>>> hrs
>>>>>>>>> later I drove the beat up car into work and got no crap about being
>>>>>>> late.
>>>>>>>>> His
>>>>>>>>> business insurance bought me a new door and a full paint job. FWIW-
>>>>> J
>>>>>>>>> DeRyke
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>>>>>
>>>>>
>>>>> --
>>>>> Asa Jay Laughton - sent from somewhere other than home
>>>>> ******************************************************
>>>>> http://www.racingagainstautism.com
>>>>> http://www.teampanteraracing.com
>>>>>
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