The earth is spinning around its axis pathing through centers of north and south poles. One spin per 24 hours. The question is how much is my speed in kilometers per second, as I am standing on the surface of this earh due to this rotation movement.
2006-06-21 07:02:25 · 10 answers · asked by capoochi c 1 in Science & Mathematics ➔ Astronomy & Space
The Earth rotates 360 degrees (2 pi radians) in 23 hours, 56 minutes, and 4.09054 seconds. In other words, its angular velocity is (2 pi)/(86,164.09054 sec). You could google the answer this one, since the Earth's angular velocity is a well known constant (7.292115 x 10^-5 rad/sec).
The equatorial radius is 6,378.137 km. Your distance from the Earth's rotational pole can be found by multiplying the equatorial radius by the cosine of your latitude. For example, if you're located at 38 degrees N latitude, your distance from the rotational axis is 6,091.59 km.
Your linear speed is found by multiplying your distance from the Earth's rotational axis by the angular velocity. For example, at 38 deg N latitude, your velocity would be 444.2 meters/sec.
You have to know the latitude a person is located at in order to calculate their velocity. You can find the approximate latitude on any globe. An online map or a Gazeteer could give you more exact coordinates. Googling the coordinates for the local airport would also get you a very accurate latitude for your city.
2006-06-21 08:01:59 · answer #1 · answered by Bob G 6 · 1⤊ 0⤋
The earth is 40,075.02 km wide at the equator. For 24 hours, there are 60min * 60 sec * 24hrs = 86400 seconds.
So it's going 40,075.02 km / 86400 seconds. so .4638312 km per second.
By the way, the reason the real speed is different from the measurement is probably whether or not you take into account "at the equator" and the fact that a day is not exactly 24 hours long (hence leap year).
2006-06-21 07:11:46 · answer #2 · answered by Hax 3 · 0⤊ 0⤋
Just remember that you're standing on a planet that's evolving
And revolving at nine hundred miles an hour,
That's orbiting at nineteen miles a second, so it's reckoned,
A sun that is the source of all our power.
The sun and you and me and all the stars that we can see
Are moving at a million miles a day
In an outer spiral arm, at forty thousand miles an hour,
Of the galaxy we call the "Milky Way".
Our galaxy itself contains a hundred billion stars.
It's a hundred thousand light years side to side.
It bulges in the middle, sixteen thousand light years thick,
But out by us, it's just three thousand light years wide.
We're thirty thousand light years from galactic central point.
We go 'round every two hundred million years,
And our galaxy is only one of millions of billions
In this amazing and expanding universe.
The universe itself keeps on expanding and expanding
In all of the directions it can whizz
As fast as it can go, at the speed of light, you know,
Twelve million miles a minute, and that's the fastest speed there is.
So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth,
And pray that there's intelligent life somewhere up in space,
'Cause there's bugger all down here on Earth.
2006-06-21 08:36:31 · answer #3 · answered by eyebum 5 · 0⤊ 0⤋
In round numbers the Earth is 25,000 miles around the equator, so 25,000 miles in 24 hours is 1,042 MPH.
But 1 foot from the pole, the distance around the earth is only 2*1*PI=6.28 feet which is 6.28/5280 or 0.00119 miles. That distance in 24 hours is 0.00005 MPH. At any latitude, the distance around the Earth is 25,000*cos(latitude). For example, at 30 degrees latitude the circumference is 25,000*cos(30)=25,000*0.866 or 21,651 miles. That distance in 24 hours is 902 MPH.
2006-06-21 07:48:58 · answer #4 · answered by campbelp2002 7 · 0⤊ 0⤋
hmm somewhere i heard that standing on the equator, you are moving at about 2000 miles an hour, but thats to make up for the year around the sun and thats an orbit not a rotation.... never mind
2006-06-21 09:10:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
well ifyou were standing at the equator you would move 40,075 kilometers in 24 hours so doing the math 24 hours = 86,400 seconds
therefore you'd be moving at 0.463 kilometers per second or 463 meters per second
2006-06-21 07:10:20 · answer #6 · answered by CRAZYDEADMOTH 3 · 0⤊ 0⤋
it's spinning approx. 0.5 km per second.That's about 1040 miles an hour. ( 1670 km an hour)
2006-06-21 07:37:25 · answer #7 · answered by Anonymous · 0⤊ 0⤋
i was just thinking that you were sober tonight as i followed you onto a Mark R Q and you never hic hic'd,but apparantly not have 1 or 2 for me gary :)
2016-05-20 09:15:16 · answer #8 · answered by Anonymous · 0⤊ 0⤋
I don't know the equation but here is the speed at the equator:
465.11 m/s
2006-06-21 07:09:22 · answer #9 · answered by Paul G 5 · 0⤊ 0⤋
Stop the world, I want to get off!
2006-06-21 08:14:04 · answer #10 · answered by Dee_Dee 2 · 0⤊ 0⤋