Theory: Go Slow or Fast? You decide and tell us why...

[bikerboy]

So I am driving along up the hill to my house as I do everyday and a thought hit me as they do everyday but on some other random topic.

So basically, you have your point, tell us why you think what you do. The question is Which saves more gas and power. Power if you don't know should go look it up. Power is the time rate at which work is done or energy is transferred. In calculus terms, power is the derivative of work with respect to time.

So with that being said, what do you think?

So basically, you are going slower for a longer period of time at a steady rate. The amount of time might give one the idea that it would waste MORE gas as your taking longer to go up. But in the same note, if youre hauling ass up and grade, the time is shorter but yet your rpms were alot higher thus using more fuel.

One guy stated that it would be equal. One would use more in a shorter period, but its the time that its being used is the saver. The long slow takes a long time and thus uses a low constant amount of fuel, and thus the same amount of gas as the faster vehicle.


what do you think?


Man, sometimes I wonder what it'd be like not to think so much.










http://i6.photobucket.com/albums/y218/bikerboy619/Whichsavesgas.jpg








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[i23theone23i]

following behind a big ass 18wheeler saves you gas LOL ....

[bs-stunting]

park your car at the bottom of the hill.. problem solved

[sdfkillz]

u have far too much time on your hands.

[cel93gt]

500ft is such a short distance it wont matter

[Niner]

What do you consider fast and what do you consider slow? The change in potential energy is equal to MGH Where M=mass G=force of gravity and H=height. So in this case you are chaning kinetic energy to potential energy. Thats why a roller coaster can't have a hill higher than the first one unless it has some sort of added propulsion. Given that the frictional losses of the wheel bearings and rolling resistance of the tires is the same regardless of speed, you would be better off going slow. Wind resistance is a squared function so it causes x^2 drag where x=speed. However vehicles are less effiecient when you hammer on the throttle and the transmisson kicks to a lower gear. Best way to attack that hill is to slowly accelerate as you approch it and coat up it, slowing down your vehicle to your desired speed.

Also what kind of vehicle can climb a hill or even run at 350 or 250 RPM's? Your boy is a moron and doesn't even understand that numerical notation. He meant 3.5x10^3 and 2.0x10^3

[AzN~BoI_585]

the question really should be just which saves more gas not which saves moire gas and power.

It also depends on the type of vehicle you have...the power to weight ratio determines how hard the engine has to work to speed up or maintain a steady speed up a hill...the harder it works the more gas it burns.

[bikerboy]

u have far too much time on your hands.

what do you do while driving or sitting at a stop light? Jack off to preoccupy the remaining time? Look at the sky? Stare at the man next you with the little blue car that's wrecked and simply stare at him to make him feel uncomfortable? I mean ae you actually that disorganized that you actually have to think about bills, and how to pay for expenses as you cruise along?


You need to learn how to budget and get that " you have too much time on your hands" out of your head....

[AzN~BoI_585]

what do you do while driving or sitting at a stop light? Jack off to preoccupy the remaining time?

Dont judge what I do in the sanctuary of my own motor vehicle.

[Everett]

its the same. as you climb up the hill, you are building potential gravitational energy, so if you go down at the same rate you went up regardless of speed, then your buildup of the potential energy will make up for the power you use. It would take less energy to reach the speed going down as it does going up. and assuming you go both up and down, it doesnt matter.

[bikerboy]

Dont judge what I do in the sanctuary of my own motor vehicle.


....haha.........

[bikerboy]

how much do you think it'd change is the mph were different? So say no more than 30 and up to appx 55? Or whatever? In your opinion would change much?

[Niner]

how much do you think it'd change is the mph were different? So say no more than 30 and up to appx 55? Or whatever? In your opinion would change much?

Above 45 or so wind resistance will make a big difference.

[stunt954s]

following behind a big ass 18wheeler saves you gas LOL ....


you saw that on mythbusters didnt u hahahaha..... so did i:whipping

[dHERZ]

Going slower saves gas, its a fact I'm pretty sure. I read it somewhere once.:lobster: