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Re: New German 157 mpg 4-seater sports car

A car with more drag, would need more horsepower to make zero->60 in

10 seconds than a similar weighted car with less drag.

An example of bad areodynamics making a difference would be two cars on the track, one having been in an accident that smashed in the front end. Both cars still weigh the same, both cars still have the same horspower. The car with the better areodynamics (not smashed) would do zero-60 in less time than the car with more drag (smashed).

The only thing the Faruq got right were the words "laws of physics".

Reply to
Gary L. Burnore
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>> >>> >>> >>>> >>>>> >>>>> "157 mpg with no fancy hybrid drive train, fuel cells, or plug in >>>>> paraphernalia. Weighing less than a thousand pounds, the sporty >>>>> rear-wheel drive 4-seater is designed to be maximally aerodynamic. the >>>>> Loremo sports a modest 2-cylinder, 20 hp turbo diesel motor, has a top >>>>> speed of 100 mph, and does 0-60 in ten seconds >>>> >>>>0 to 60 in ten seconds with 20 hp requires the vehicle to weigh less than >>>>270 pounds (with driver). >>>>LAW OF PHYSICS, DA - >>> >>> Uh, wouldn't that depend on factors you've not listed? >> >>Nope, anybody that races cars know that, it is a simple relationship, all >>you need is HP, weight of car, and the zero to 60 time. Google for it. > >Ah, so someone should tell drag racers and nascar drivers that drag >has nothing to do with speed. Worrying about areodynamics is >un-necessary. Heh. Riiiiiiight.

Wouldn't the drag factor be derived from the 0 to 60 time?...

Reply to
Gord Beaman

But if a car with NO drag couldn't do 0-60 in 10 seconds with 20 hp and

1000 pounds or whatever...then it can't be done in a car with ANY drag.

Maybe that's what he meant.

HP is Work / time. Work = F*d, F=m*a, d=1/2a*t^2.

Those are some rudimentary kinematics equations that you could solve to see if it is possible.

Reply to
st-bum

This makes no sense...how can you get better than NO DRAG?...

Reply to
Gord Beaman

No it makes perfect sense. You can't do better than no drag.

If you have a car which can't get 0-60 in 10 seconds with NO DRAG. You can prove it with basic physics.

Now add drag. Will your acceleration go up or down? Down. So your

0-60 time will be WORSE. So if you prove with NO DRAG the 0-60 time is impossible, then it is also impossible WITH DRAG. Thus you can ignore drag.
Reply to
st-bum

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