SageBrush
REJECT Fascism
I see that the Northerners are causing problems again. As punishment I suggest they type 48 km/hr48kmph = 48000mph = ~77250kph!!! I'd be SUPER happy with that too!
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48kmph = 48000mph = ~77250kph!!! I'd be SUPER happy with that too!
That would add 330 miles of range to a battery in about 25 seconds. It would shut up the ICE fans...
The heat from that kind of transfer would be incredible. That's like the old joke, "other than that Mrs Lincoln, how was the play?"
shouldn't that be Mmph in weirdo system?48kmph = 48000mph = ~77250kph!!! I'd be SUPER happy with that too!
48000mph (or 48 kilomiles per hour) ~ 77Mm/h (Megameters/hour).
per symbol is not "p" in metrics. It's "/".
Mathematically speed is the function of distance divided by time. Therefore a forward slash is most precise-appropriate symbol instead of writing a full fracture of distance and time.
To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time.
speed = distance/time
Even though all prefixes are allowed, only two units of speed are common in metric system: kilometers per hour and meters per second.
First one is for real life stuff, second one is more appropriate for scientific stuff-calculations.
Gentlemen's agreement top vehicle speed of 155mph, 250km/h is hard to imagine in real time as hour is way too long.
Though 70 meters (76,5 yards) each second - that is easy to imagine.
There are 3600 seconds in one hour. Therefore 3600m/h=3,6km/h=1m/s. Nothing is rounded.
Fastest speed (light speed) of around 300 000 m/s is hard to imagine. Until you add prefix and get to 300 km/s (something like Model 3 SR range in winter in one second).
Fun facts: yard is exactly 0,9144 meters (without rounding). It is the definition of yard.
And a foot is exactly 0,3048. Again, no rounding.
And an inch is exactly 0,0254m or 2,54cm. By definition.
If meter would change (it won't) so would feets and inches.
But a kilogram will change. The last unit will be resolved in 2018
per symbol is not "p" in metrics. It's "/".
Mathematically speed is the function of distance divided by time. Therefore a forward slash is most precise-appropriate symbol instead of writing a full fracture of distance and time.
To solve for speed or rate use the formula for speed, s = d/t which means speed equals distance divided by time.
speed = distance/time
Even though all prefixes are allowed, only two units of speed are common in metric system: kilometers per hour and meters per second.
First one is for real life stuff, second one is more appropriate for scientific stuff-calculations.
Gentlemen's agreement top vehicle speed of 155mph, 250km/h is hard to imagine in real time as hour is way too long.
Though 70 meters (76,5 yards) each second - that is easy to imagine.
There are 3600 seconds in one hour. Therefore 3600m/h=3,6km/h=1m/s. Nothing is rounded.
Fastest speed (light speed) of around 300 000 m/s is hard to imagine. Until you add prefix and get to 300 km/s (something like Model 3 SR range in winter in one second).
How many miles would vehicle travel in one hour if it moves 10 feet each second? Don't use google or any other converter
Fun facts: yard is exactly 0,9144 meters (without rounding). It is the definition of yard.
And a foot is exactly 0,3048. Again, no rounding.
And an inch is exactly 0,0254m or 2,54cm. By definition.
If meter would change (it won't) so would feets and inches.
But a kilogram will change. The last unit will be resolved in 2018
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T34ME
Active Member
First, I think the USA is remiss and shortsighted for not adopting the Metric System. Until all nations unite behind the Metric System, how do we resolve the confusion behind the use of the letter "m" to mean "mile", "minute", and "meter"? Second, should there be a Metric System to measure time rather than the confusing 365-12-7-24-60-60 system?
Way back in the 80's it seemed we were on track to get this done. There was already dual mile/km signage on multiple interstates, and then it was all abandoned. At least soda/pop still is measured in liters. ;-)
The advent of calculators, especially smart phones, obviated the need for the metric system. Don't you think?
dgpcolorado
high altitude member
A bit farther back than that. The Metric Conversion Act was in 1975 but the push to go metric was abandoned early in the Reagan administration thanks to pushback from the general populace, and for ideological reasons.
As someone working in science and "fluent" in both systems, I was very disappointed.
At least with an electric car I no longer have to pay any attention to gallons of gas, just kWh of electricity. [I do find kWh more familiar and easy to grasp than joules, however, even though it is somewhat awkward as a unit, thanks to the time part of it.]
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Well, we can't simplify Earth's orbital parameters (almost 365 days, almost 24 hours, moon week cycles).
Time, in metric system, is and always will be a second. 60 seconds, 3600 seconds.
One year would be slightly more than 31536000 seconds (because a year is not 365 days).
Hours and days are like simplifications. When we answer "what's the time", we deduct years (2017) and even days.
All we say is time since today (in whatever timezone) (again, AM/PM is not metric), for me, 22:59
It's a simplification. In science, time usually has a starting point and end point. Then seconds are used.
Because 10 feet is 1,6% more than 3m/s, your answer is 1,6% incorrect.that would be 3m/s = 10800 m/h = 6 3/4 mph
You gave answer with precision of 2 decimal points (6,75 mph). If you would say around 6,8 mph, that would be correct. But due to actual speed is around 6,82mph (exactly 6 9/11 mph), 6,75 is incorrect
Except, if you gave answer with precision of a quarter unit (0,25mph, 1/4), then it fits. Though then fractures would be again, non-metric (this is how feet, inches, yards operate). Though question was not metric. Let's call it an even.
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Dynastar
Member
Someone should redo the Tesla website in arcaic units of measurement. That's not a 100kwh battery, it's 0.086 tons of TNT!
SageBrush
REJECT Fascism
When it comes to engineering and physics, give me metric or give me death.
The Aussies have it best (from what I gather): watts and joules. They use MJ as a convenient energy quantity, eg. on their electric bill.
SageBrush
REJECT Fascism
RedAntisocial
Member
Possibly, but no one knows for sure at this point. I will say though that they seem to be moving away from that and that it makes more sense to keep things bundled for ease of production, especially in the Model 3 where the goal is "ease of manufacture".
SmartElectric
Active Member
I prefer the bundling for one major reason.
When buying a used Tesla, it's far easier to find a car with the options you want.
When looking at used CPO cars a few years ago, it took a few months before a fully optioned car came up, so it was a bit of a wait, if Tesla had bundled options early on, we could have had a greater choice of cars to pick from.
When buying a used Tesla, it's far easier to find a car with the options you want.
When looking at used CPO cars a few years ago, it took a few months before a fully optioned car came up, so it was a bit of a wait, if Tesla had bundled options early on, we could have had a greater choice of cars to pick from.
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