Got it!!!!!!!!! 2009 997 C2S!
11-05-2009, 11:05 PM
#61
Racer
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Join Date: May 2007
Location: Orange County NY
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Peace.
11-05-2009, 11:35 PM
#62
Banned
But yeah, I thought your comment was uncalled for, seeing that I was only coming to your defense in this thread.
But it's okay, I have thick skin. Enjoy your beautiful new ride. And make sure to include your son on many of these rides as these will be memories that will last a lifetime.
11-07-2009, 01:40 PM
#64
Instructor
Join Date: Apr 2006
Location: Toronto Canada
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Hey Ben! How's your one dimensional space treating you?! Done any more pontificating about constants and variables?
I'm surprised you don't have an opinion on jerk, above. Concept is widely used in engine design.....you know, by engineers and science types.
I'm surprised you don't have an opinion on jerk, above. Concept is widely used in engine design.....you know, by engineers and science types.
11-07-2009, 02:25 PM
#65
Nordschleife Master
Boy oh boy... why did I ask the OP what he meant by D? it started a sorry controversy.
The OP stated that D is distance, others used x and s for distance variables (which is common). Why argue about nonsensical details?
The OP stated that D is distance, others used x and s for distance variables (which is common). Why argue about nonsensical details?
11-07-2009, 09:27 PM
#67
I think that the use of abbreviations has confused the matter.
X as used above is not a constant but a function of time and technically is written as x(t). Under those circumstances d x(t)/dt is the velocity. You can use any variable name interchangably for x. X is also the distance traveled as a function of time. As long as an object moves in a straight line you can always adjust your x axis to be along the direction of travel. This is an arbitrary choice. If the path is not a straight line then x(t) becomes a 3 dimentional vector and its first derivative is the velocity vector and is tangent to the direction of travel.
X as used above is not a constant but a function of time and technically is written as x(t). Under those circumstances d x(t)/dt is the velocity. You can use any variable name interchangably for x. X is also the distance traveled as a function of time. As long as an object moves in a straight line you can always adjust your x axis to be along the direction of travel. This is an arbitrary choice. If the path is not a straight line then x(t) becomes a 3 dimentional vector and its first derivative is the velocity vector and is tangent to the direction of travel.
11-07-2009, 09:36 PM
#68
This thread should win an award. I've never in my entire Internet career seen a "got my new car thread" get hijacked over a Calculus debate. If someone here has a PhD in math then please settle this otherwise we should all 
11-07-2009, 11:24 PM
#70
Burning Brakes
Yeah, otherwise they might add calculus to the list of thread topics that get moved to the "Politics and Controversy" forum.
11-07-2009, 11:28 PM
#71
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OC I am not wrong the acceleration is the 2nd derivative of the first equation of distance.
thats the difference between physicists and Engineers. Engineers are employed.
the velocity is the first derivative of the distance equation .
I suppose I could be wrong I havent used that in 25 years and its off the top of my head.
But I doubt it.
Its the classic problem given to first year physics students They are given the distance equation
and asked to find the firs derivative of that which is velocity and the 2nd derivative of that is
Accelleration.
thats the difference between physicists and Engineers. Engineers are employed.
the velocity is the first derivative of the distance equation .
I suppose I could be wrong I havent used that in 25 years and its off the top of my head.
But I doubt it.
Its the classic problem given to first year physics students They are given the distance equation
and asked to find the firs derivative of that which is velocity and the 2nd derivative of that is
Accelleration.
Last edited by OldGuy; 11-07-2009 at 11:54 PM.
11-08-2009, 12:16 AM
#73
Three Wheelin'
Join Date: Apr 2008
Location: Sarasota, FL. Home of Florida Man.
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OC I am not wrong the acceleration is the 2nd derivative of the first equation of distance.
thats the difference between physicists and Engineers. Engineers are employed.
the velocity is the first derivative of the distance equation .
I suppose I could be wrong I havent used that in 25 years and its off the top of my head.
But I doubt it.
Its the classic problem given to first year physics students They are given the distance equation
and asked to find the firs derivative of that which is velocity and the 2nd derivative of that is
Accelleration.
thats the difference between physicists and Engineers. Engineers are employed.
the velocity is the first derivative of the distance equation .
I suppose I could be wrong I havent used that in 25 years and its off the top of my head.
But I doubt it.
Its the classic problem given to first year physics students They are given the distance equation
and asked to find the firs derivative of that which is velocity and the 2nd derivative of that is
Accelleration.
11-08-2009, 01:34 AM
#74
Banned
Yeaaaahhhh, I should have known the concept of a linear dimension would be way over your head. Who was I kiddin'? I'm actually surprised you even know how to use a computer -- after your son logs you in and lets you use it.
Wow. The brilliance of your logic astounds me.
Old Guy, why don't you stick to your rocking chair. And leave the thinking to trained professionals.
Old Guy, why don't you stick to your rocking chair. And leave the thinking to trained professionals.
