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How Fast are We Going?
Ambrose
Member Posts: 3,221 ✭✭✭✭
As a result of a kid's science experiment, I got to thinking too much. The Earth spins once every 24 hours and it's 24,875 mi. around. Therefore we're going 1,036 MPH or a bit faster than a .44 magnum bullet. But, at the same time, the Earth is circling the Sun on a course that is 92,960,000 mi. in radius. Since it makes that circuit in a years time, that's 584,086,272 miles per year or 66,631 MPH! Now my question: Is the Earth rotating with or against its orbit; IOW, are we going 66,631 MPH - 1,036 MPH or + 1,036 MPH? (Assuming without NASCAR)!
Comments
As a result of a kid's science experiment, I got to thinking too much. The Earth spins once every 24 hours and it's 24,875 mi. around. Therefore we're going 1,036 MPH or a bit faster than a .44 magnum bullet. But, at the same time, the Earth is circling the Sun on a course that is 92,960,000 mi. in radius. Since it makes that circuit in a years time, that's 584,086,272 miles per year or 66,631 MPH! Now my question: Is the Earth rotating with or against its orbit; IOW, are we going 66,631 MPH - 1,036 MPH or + 1,036 MPH? (Assuming without NASCAR)!
Depends upon where you are on the earth and what time of day its is.
The side of the earth facing the sun is moving with the orbital speed and is thus additive. The side facing away from the sun is moving against the orbital direction and is thus subtracted from the orbital speed.
So, at the poles and at 6:00 am and 6:00 pm, our speed is the orbital speed. When at the equator at midnight and a noon, the speeds are added or subtracted as above.
At different times of day and at differing latitudes, the speeds can be figured based upon angle from the sun and angle from the equator.
Please note that none of the above takes into account the 26? tilt of the earths rotation axis. This will change the rotational speed vector, and, frankly, is a large pain in the * to calculate.
Brad Steele
And fiery auto crashes
Some will die in hot pursuit
While sifting through my ashes
Some will fall in love with life
And drink it from a fountain
That is pouring like an avalanche
Coming down the mountain
But what if you are Dale Earnhardt going into turn one at 198 MPH facing north?
Then you'd be starting to drift. Is that legal in NASCAR?
at 18kmph thru space.
I prolly have the numbers all messed up.
I like pie!
Capt. Jack Sparrow.
I'm fairly well convinced that Keppler was wrong. That planetary motion is an illusion.
And everything revolves around Don.
Ask Rocky, he knows all this space stuff.[:)]
Right??
Where U at ROCKY RAAB?[8D]
Exactly.....I went all day without feeling stupid.....until now!!!
quote:Originally posted by Ambrose
As a result of a kid's science experiment, I got to thinking too much. The Earth spins once every 24 hours and it's 24,875 mi. around. Therefore we're going 1,036 MPH or a bit faster than a .44 magnum bullet. But, at the same time, the Earth is circling the Sun on a course that is 92,960,000 mi. in radius. Since it makes that circuit in a years time, that's 584,086,272 miles per year or 66,631 MPH! Now my question: Is the Earth rotating with or against its orbit; IOW, are we going 66,631 MPH - 1,036 MPH or + 1,036 MPH? (Assuming without NASCAR)!
Depends upon where you are on the earth and what time of day its is.
The side of the earth facing the sun is moving with the orbital speed and is thus additive. The side facing away from the sun is moving against the orbital direction and is thus subtracted from the orbital speed.
So, at the poles and at 6:00 am and 6:00 pm, our speed is the orbital speed. When at the equator at midnight and a noon, the speeds are added or subtracted as above.
At different times of day and at differing latitudes, the speeds can be figured based upon angle from the sun and angle from the equator.
Please note that none of the above takes into account the 26? tilt of the earths rotation axis. This will change the rotational speed vector, and, frankly, is a large pain in the * to calculate.
GTFOoH!
quote:Originally posted by Don McManus
quote:Originally posted by Ambrose
As a result of a kid's science experiment, I got to thinking too much. The Earth spins once every 24 hours and it's 24,875 mi. around. Therefore we're going 1,036 MPH or a bit faster than a .44 magnum bullet. But, at the same time, the Earth is circling the Sun on a course that is 92,960,000 mi. in radius. Since it makes that circuit in a years time, that's 584,086,272 miles per year or 66,631 MPH! Now my question: Is the Earth rotating with or against its orbit; IOW, are we going 66,631 MPH - 1,036 MPH or + 1,036 MPH? (Assuming without NASCAR)!
Depends upon where you are on the earth and what time of day its is.
The side of the earth facing the sun is moving with the orbital speed and is thus additive. The side facing away from the sun is moving against the orbital direction and is thus subtracted from the orbital speed.
So, at the poles and at 6:00 am and 6:00 pm, our speed is the orbital speed. When at the equator at midnight and a noon, the speeds are added or subtracted as above.
At different times of day and at differing latitudes, the speeds can be figured based upon angle from the sun and angle from the equator.
Please note that none of the above takes into account the 26? tilt of the earths rotation axis. This will change the rotational speed vector, and, frankly, is a large pain in the * to calculate.
GTFOoH!
Now that I have googled 'GTFOoH', I must say this seems extremely impolite.[:)]
Brad Steele
quote:Originally posted by Don McManus
At different times of day and at differing latitudes, the speeds can be figured based upon angle from the sun and angle from the equator.
Please note that none of the above takes into account the 26? tilt of the earths rotation axis. This will change the rotational speed vector, and, frankly, is a large pain in the * to calculate.
Correction, Don. It's 23.5 degrees.
[;)]
Today, maybe.
[:)]
Brad Steele