how are cars used in a demolition derby?
104289
They are driven by people and crashed into each other until only one car can still move.
266517
Don't use sand! I believe that they use crushed up walnut shells in blasting on surfaces that you don't want to get all pitted up.
425022
There are plans to have running yet this year.\nhttp://www.bbc.co.uk/derby/have_your_say/speedway_long_eaton.shtml
401704
If drag racing is what you mean skip the imports, you can dump thousands into them and not get out of the 13's 1/4 mile.  A late model Camaro or Mustang is the way to go for cheap speed, lots of parts on hand...400+ hp is easily attainable for very little dough.  If you must go import get a six-cylinder turbo car (300ZX, 3000GT, Supra) and upgrade the turbo, can be very quick but also very expensive.
316984
They are a number of them. Many of the pre 40's cars were melted down for war materials.
132226
Its not legal in any state, its done on 1/4 mile race cars for show only, on rocket cars , or hydrogen rocket cars,\nthe use a stainless steel ring fitted to the rear or the exh portion of the vehicle, with small holes around it, fitted with a pressure hose to a charged tank of gasoline and and igniters switch at the ring, called after burnner\nas the exh comes out the switch or valve is open they actvate the ignighter and with the exh coming out, it will throw a flame, this more complacated than you think, with all the saftey stuff i am skipping through. if its not for a show at a race track, dont even try it
572345
Uh...\n\nNOS Toy?\nThat would be a race car that you refer to as a toy, and is equipped with Nitrus Oxide Syustems for maximum HP at take off.
50059
Swimming backstroke;  Demolition derby (when you're driving a car with a front end radiator);
891229
The charities auction off the cars and use the proceeds.  I donated an old SUV once and I've personally known charities who use that system.  It works out well.  Just investigate any charity that you donate to first, as there are a lot of scams out there.
1181992
that's superb! it's best to get some use out of them anyway, cars just hit them and students just steal them as beer trophies - you could consider it recycling... :o)
861581
Cops have them too.  Use helicopters.  Require certain high speed models to come with a kill switch like are used on go-cart tracks.  Disabling it would activate a lo-jac type device or ruin the engine.
701538
yup you can do this with momentum conservation laws.  I wont do it for you though.\n\nBut I will help you out.\n\nResolve in the direction of the slide after the crash.  Work out the angle each car was travelling relative to this line (a diagram will help). Then use momentum of the collected impact slide.  From that you can work out the velocities of the two separate vehicles using cos*angle*mass*velocity=momentum
975040
You may be able to find it on one of the posts at the blog called Demolition, Scrap Metal and Salvage News http://www.demolition1.blogspot.com
711381
Use the box of baking soda as a weight to provide torque to propel the vehicle and to wind the rubber bands. Once the box hits the ground, the hook can fall off and the rubber bands will unwind and propel the vehicle back the 1m.\n\nYou are using the box of baking soda as potential energy converted to kinetic energy to wind the bands and propel the vehicle.
180954
A car that does not use gasoline or diesel
266105
you can use an orange juice contrainer as the base of the car and for the wheels...anything round shaped.
845154
Aston Martin w/ machine guns