281–290 of 307 posts
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>The thing is, you can't actually feel motion at a constant speed In a vacuum. If you roll the window down, or if the atmosphere starts ablating you into a hot plasma then you may realize you're going very fast.
Then you're experiencing acceleration, just in the opposite direction.
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Not if you’re moving at constant speed. The air molecules are experiencing acceleration.
Please define "drag" in a way that somehow contradicts what I said...
By definition they are not experiencing any acceleration.
If they are experiencing a drag force they are also experiencing a thrust force that is equal to it because they are traveling at a constant speed.
‘Feeling the effect of a force’ is not the same thing as ‘experiencing an acceleration’.
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Something weird about this is that humans very often ascribe the sensation of d^ns/dt^n, to feeling d^n-1s/dt^n-1. So people will say that something which accelerates quickly is 'fast'. Or they will say, when they feel themselves initially being pressed back into their seat as a plane starts its takeoff roll, that they are experiencing 'acceleration' when what they are experiencing is actually jerk. The thing is, you…
Hmmm, from a Newtonian perspective I would have argued (or at least my personal impression is) the only thing we actually perceive is force (i.e. acceleration). All the situations you described are just (higher-order) changes of acceleration and even if you give them a name: At the end of the day, the only thing that matters to our bodies is the force.
So it’s changes in acceleration that create movement sensations, not acceleration itself.
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They could boost with super capacitors.
Super capacitors are highly overrated by the general public. They really aren't that much better than lithium ion except for in a very narrow power/time bandwidth.
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Suddenly I remember a Top Gear episode where Nick Mason drops off his F1 (maybe it was a Ferrari Enzo?) at the test track, then his personal helicopter lands on the strip, picks him up, and flies him out of the scene, all while "Money" by Pink Floyd plays in the background.
Enzo. That was a good episode. https://youtu.be/f7jsauspMmU?si=MDEr2B1uHq4FT-oh The interview where they talk about his book is entertaining as well.
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Easily one of the most dangerous bit of farm equipment. I’ve seen several people killed by getting their hand/arm in a PTO shaft.
You might be the only person on the planet who's witnessed several of those, if you mean first-hand.
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Aren't electric cars bound to beat any dragster car eventually? You get max torque instantly.
Depends on how fast you can release that energy from the batteries. Not as instant. Chemical explosions are rapid.
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Its not a sports car. Besides, BMW M4 CSL, Jaguar XE project 8, BMW M3, Mercedes AMG 63 GT have faster lap times.
Fine. At the time when it ran that time it was the fastest, and faster than practically every sports car ever made. The nurburgring is about the most sports car track ever made. I don't really know how to measure anything about a car's sportiness other than its speed around the track generally agreed to be the most "Gran Turismo" style. If you want your own personal gatekeeping standards for "true sports car", whatev…
See here:
https://www.hotcars.com/fastest-sedans-around-the-nurburgrin...
And join with the list here:
https://en.wikipedia.org/wiki/List_of_N%C3%BCrburgring_Nords...
All five sedans that beat the Model S around the Nürburgring drove their laps earlier. The Plaid has only ever been the sixth fastest sedan around the 'ring. Which is excellent, but not what you said.
>and faster than practically every sports car ever made.
It isn't. It loses even to the 2012 Nissan GT-R or 2007 911 GT2. It loses to any of the faster 911s by nearly a minute. It is faster than some sports cars, but not recent sports cars at a similar price.
How is it that the Plaid, despite being one of the fastest cars on the road in a straight line, loses quite badly to cars with half the power? Because there is much more to performance than just acceleration. The cars you disparage are dramatically better in the corners than the Plaid.
>The nurburgring is about the most sports car track ever made.
I don't quite know what this means, but I don't think it's true. The use of the 'ring as a benchmark is often criticized because it rewards power over handling. A track that specifically tests handling would be slower and twistier. This is not sour grapes; people have been saying this for decades.
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i used this calculator[1]. Looks like 3.5 . Just for fun... Now, if we use the forces that air pilots can sustain for 2 seconds we're looking at about 0.35 seconds is around the limit. and 0.3 seconds would create about 11Gs enough to kill you (all according to quick googles of numbers. If they can get a car to do 9Gs for 2 seconds we're looking at about 635Km/hr !!
11G is not lethal for the short durations you need for 0-100 (or even 0-200). A typical car crash at 20 mph is around 20 G deceleration. If you look at racing car crash data, one study reports 50 G as approximately the threshold for when you start to see frequent brain injuries. https://pubmed.ncbi.nlm.nih.gov/16531891/