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A comment on What scientific term or concept ought to be more widely known? (2017).

Re:What scientific term or concept ought to be more widely k... by jschveibinz on Tuesday December 07, 2021 @08:40AM (#29472309)
v = dx/dt

If you are driving 5 miles across town (dx), and you average 25 mph (v), it will take you roughly 5/25 hours, or 12 minutes (dt) to get there. By driving 50 miles per hour, you get there in 6 minutes. Is it worth the risk to yourself and others (bikers and pedestrians) to save 6 minutes?

If you are driving to work and it normally takes you 30 minutes to get there by going 60 mph (30 miles), then if you go 80 mph by frequently changing lanes and tailgating the guy in front of you you will save around 8 minutes getting to work.

dt = 30/60 = 30 min dt = 30/80 = 22.5 min

Is it worth the risk to yourself and others to save 8 minutes?

Drive safely with the appreciation of v = dx/dt!

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Re:What scientific term or concept ought to be more widely k... by walls on Wednesday December 08, 2021 @01:15AM (#29481789)
You're saving 8 minutes both ways. That's seven days of your life back every year.
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Re:What scientific term or concept ought to be more widely k... by oezi on Wednesday December 08, 2021 @01:44AM (#29481912)
You seem to work too many days per year or have shorter days.

With 220 work days and 16 wake hours I think you would lose less than 4 days.

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Re:What scientific term or concept ought to be more widely k... by antisthenes on Wednesday December 08, 2021 @12:26AM (#29481541)
And, by association, F = m*V^2

The risk of serious injury in an accident increases exponentially with speed. This is especially true for pedestrian victims.

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Re:What scientific term or concept ought to be more widely k... by johndough on Wednesday December 08, 2021 @01:16AM (#29481791)
You probably mean E = 1/2 m v^2 https://en.wikipedia.org/wiki/Kinetic_energy#Kinetic_energy_...
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Re:What scientific term or concept ought to be more widely k... by epgui on Wednesday December 08, 2021 @01:24AM (#29481819)
You can harmlessly spread a lot of energy difference over a large enough time, or a large enough surface.

The most relevant concepts are probably impulse [1] and inelastic collision [2].

[1] https://en.wikipedia.org/wiki/Impulse_(physics)

[2] https://en.wikipedia.org/wiki/Inelastic_collision

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Re:What scientific term or concept ought to be more widely k... by antisthenes on Wednesday December 08, 2021 @03:10AM (#29482308)
Ah, yes. The perils of making comments at 2 AM.

I stand corrected.

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Re:What scientific term or concept ought to be more widely k... by OccamsRazr on Wednesday December 08, 2021 @01:11AM (#29481776)
Dangerous driving will eventually introduce one to another familiar, but much more devastating, concept:

a = dv /dt.

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Re:What scientific term or concept ought to be more widely k... by dotancohen on Wednesday December 08, 2021 @01:25AM (#29481823)
With an extremely small value for dt.
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Re:What scientific term or concept ought to be more widely k... by andi999 on Wednesday December 08, 2021 @01:17AM (#29481799)
Work 100km. Driving 80km/h with little lane switching is 75 min. Going 150km/h also with little lane switching is 40min. Is saving 35 minutes worth it: absolutely.
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Re:What scientific term or concept ought to be more widely k... by oezi on Wednesday December 08, 2021 @01:46AM (#29481919)
Going faster than 130 km/h (85 mph) is not worth it in most cars because you can't recover the extra time needed to refuel due to higher fuel consumption.
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Re:What scientific term or concept ought to be more widely k... by andi999 on Wednesday December 08, 2021 @06:45AM (#29483624)
Sweet point.
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Re:What scientific term or concept ought to be more widely k... by tomjen3 on Wednesday December 08, 2021 @01:05AM (#29481744)
Time is one thing. Going fast is also just plain fun.
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Re:What scientific term or concept ought to be more widely k... by DoingIsLearning on Wednesday December 08, 2021 @01:38AM (#29481883)
It really is! But that is why we have track days. There really is no excuse for doing on a public road.
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