Actually, m/s is LESS than one-third km/h, not "over", 1/3.6, in fact, or
0.27777... That's closer to a quarter, but inaccurate either way.
"600 km to destination, and I'm going 100 km/h."
That would be 27.77 m/s, not 33.33 m/s. Either way, to find the travel time
in ones head, one would have to divide 600 km by 33 m/s, which is 18 000 s.
(21.6 ks, to use the actual speed.) You plan your day in seconds, don't
you? I don't, so I'd have to divide that by 3600 to find that it's about 5
hours. Unfortunately, this approximation causes the result to be an entire
hour off, and that's if I don't make any mistakes while calculating this in
my head. Not impossible, just problematic.
That's opposed to the original formula: 600/100 = 6
Until we are using ks clocks, it is easier to use hours for figuring travel
times.
--
John Hynes
www.decimaltime.org
2006 Jan. 27.020 UT
----- Original Message -----
From: "Linda D. Bergeron" <[EMAIL PROTECTED]>
To: "U.S. Metric Association" <[email protected]>
Sent: Thursday, January 26, 2006 4:40 AM
Subject: [USMA:35863] FW: RE: Weatherbug
Not really, just think of m/s as little over third of your km/h value.
Linda
----Original Message Follows----
From: "Carleton MacDonald" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "U.S. Metric Association" <[email protected]>
Subject: [USMA:35856] RE: Weatherbug
Date: Wed, 25 Jan 2006 22:07:06 -0500
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True. 600 km to destination, and I'm going 100 km/h. Six hours.
Change the speed to meters per second, and the mental calculation becomes
almost impossible.
Carleton
_____
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Bill Hooper
Sent: Wednesday, January 25, 2006 21:41
To: U.S. Metric Association
Subject: [USMA:35854] RE: Weatherbug
On 2006 Jan 24 , at 9:29 AM, Jon Saxton wrote:
The whole km/h vs m/s debate ... makes me wonder how we got stuck with
speeds measured on an hourly basis. ... Any thoughts?
The only speed measurements familiar to many people is the speeds at which
they drive their automobiles. They measure those speeds in miles per hour
or
in kilometres per hour because they relate distances driven to time
measured
on a clock, predominately in hours.
Thus, I think they just are familiar with mph or km/h and usually don't
think in terms of metres per second or feet per second or anything else.
Regards,
Bill Hooper
Fernandina Beach, Florida, USA
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