What is The velocity of the gravity of the earth?

Answer 1

At the Equator it spins at 1,000 mph.

At 60 degrees N/S, the circumference is half the distance than at the Equator so it inly spins at half the speed ; 500 mph.

At the poles N/S it spins on the spot. 0 mph.

Answer 2

ALL THAT'S WRITTEN BENEATH MY ANSWER IS WRONG!

The question is what is Earth's "ROTATION SPEED". The former answer below discusses what an individual's "TANGENTIAL SPEED" or "linear speed" is which is based on the radius to the axis of rotation.

ROTATIONAL SPEED is the measure of the number of rotations per unit of time. Therefore the broad value is the earth rotates once per 24 hours. A valid rotation speed could be 1 rotation/day or 0.042 rotations per hour or .000694 rotations per minute or "rpm". Rotational speed is independent of any radius. Rotational speed is the same for all objects located on the Earth.

Just as on a bicycle wheel that is spinning. Locations further from the axis will have greater TANGENTIAL speed. But they all complete one ROTATION at the same time.

If you're wanting to know how fast YOU'RE going in distance/time while on the Earth, then yes, you'd need to know the radius of the Earth at your specific latitude.

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That depends on where on Earth you are standing. At the poles, the Earth hardly spins at all, but as you travel towards the equator, the rotational speed picks up. This makes sense -- as the circumference of a circle increases, a single point along it has to travel faster to complete a revolution in the same amount of time.

The rotational speed of the Earth at the equator is about 1,038 miles per hour. The atmosphere at the equator is also slightly thicker due to rotation, and you weigh slightly less. At mid-latitudes, the speed of the Earth's rotation decreases to 700 to 900 miles per hour.

If the Earth were to stop spinning suddenly, the atmosphere would still be zipping along nicely at around 1,000 miles an hour. As a result, everything not attached to bedrock would pretty much be scoured clean.

If you have any more questions about the Earth's rotation, check out this nifty Ask a Space Scientist page. Looking for a cosmic perspective on how fast the earth is moving? Remember that all questions about motion or speed are only complete with an appropriate frame of reference.

Answer 3

Easy. One rotation per day. (No, really!)

The speed actually changes depending on the latitude. To approximate the speed at a given latitude above the equator in degrees 'Θ':

Speed of Rotation = cos(Θ) * (40,000 km / 24 hours)

The earth's circumference is about 40,000 km. It rotates once per day, or about once per 24 hours. So, at the equator (Θ = 0 degrees), the speed is approximately 1700 km/hour or 470 m/s.

Answer 4

The earth's gravity does not invoke a constant velocity, but rather an acceleration of objects attracted to it - for instance, an object falling to the ground. This means the object moves faster and faster as it approches earth. The rate of this acceleration (ignoring air friction and aerodynamics) is 32 feet / second / second, sometimes stated as 32 feet per second squared. In other words, an object will fall (be attracted to earth) at a rate of 32 feet in the first second, 64 feet in the second second, 128 feet in the third second, and so on.

Answer 5

The circumference of the Earth is about 25,000 miles, and it rotates once about every 24 hours. Therefore, your answer would be about 25000 miles per 24 hours, which would be about 1000 miles per hour.

Source: http://imagine.gsfc.NASA.gov/docs/ask_astro/answers/970401c.html

Edit: That's a pretty good answer. 25000/24 gives about 1042 mph.

Of course that's at the equator. The speed is obviously less as you move away from the equator. Here's a more exact calculation, which gives more or less the same answer.

The Earth's equatorial diameter is almost exactly 24,900 miles.

The Earth rotates in about 23 hours and 56 minutes (it's the "solar day" which

is exactly 24 hours).

These numbers give the Earth's equatorial rotation speed as 1040 mph.
-- The circumference of the earth at the equator is approximately 25,000 miles and it

takes 24 hours for a full rotation. Therefore a point on the equator is spinning at

at just over 1000 miles per hour.

-- Earth rotates on its axis at a rate of 15 degrees per hour

-- Earth rotates 360 degrees in 24 hours

-- The Earth rotates on its axis exactly once per day. If you are interested in knowing

what this means in terms of miles per hour, that depends where on the globe you

are measuring the speed of rotation. The Equator rotates the fastest, the poles

rotate the slowest.

-- 2 pi per day.
-- Once a day

-- (2 pi) per (23H 59M 4S)

-- Roughly1,000 miles per hour at the equator.

1,000 cos(latitude) elsewhere.
There is a great NASA site that gives a basic and advance answer to this question.

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970401c.html

For the basic answer: The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour. Multiply by cosine of your latitude to see how fast the Earth is rotating where you are. Earth is also moving around the Sun at about 67,000 miles per hour.
-- 1 rotation per 23hours 56minutes 4seconds (rounded)

-- 15 degrees per hour (rounded)

-- 1,050 miles per hour at the equator (rounded)
One rotation a day that's why you see night and day in 24 hours.

That's not what the question is, here is a real answer for you.

This question is a widely asked question, but there is more then one answer. It depends where on 'earth' you are wondering. Such as the poles would obviously spin slower then the equator because of the circumference. At the equator it is spinning at about 1,083/mph. At a lower latitude the speed decreases to around 700-900/mph.Really hoped this answers your question (:

current
The earth rotates on its axis once in every 24 hours, or 15 degrees per hour; at the equator this translates to a speed of about a thousand miles an hour. Although this effect is not noticeable to an observer, it makes equatorial latitudes perferable by adding speed for satelites launched into orbit.

Actually, the sidereal rotation period of the Earth is 23 hours and 56 minutes.
The rotational speed of the Earth at the equator is about 1,038 miles per hour.

At mid-latitudes, the speed of the Earth's rotation decreases to 700 to 900 miles per hour.

At either pole the earth spins at 0 miles per hour.
The earth spins at about 1,000 miles per hour (at the Equator). Earth is approximately 24,000 miles in circumference (at the Equator) which gives an Earth Day a length of 24 hours. (24,000 miles divided by 1,000 miles per hour is 24.)

(The actual speed is about 1040 mph and the circumference about 24,900 miles but the ratio is still 24. The metric equivalent of equatorial rotation velocity is just over 1674 km/hr.)

The Earth rotates one time in 24 hours. Since one full circle is 360 degrees, that works out to 15 degrees per hour.

The Earth's radius is about 25000 miles, so at the equator, the Earth turns 25000/24 miles per hour, or about 1040 miles per hour at the equator. You can calculate the speed of the Earth's turning at your location by multiplying 1040 by the cosine of your latitude.

So here in Sacramento, California, the latitude is about 38.5 degrees. The cosine of 38.5° is .696, so the Earth spins at 1040*.696= 724 miles per hour. (At either pole, the cosine of 90° equals zero, and of course the spin is also zero.)

Answer

The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1038 miles per hour(1669 kmph).

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For those wanting a little more detail: The equatorial rotation velocity of the earth is 465.11 m/s (meters per second). This is based on the sidereal rotation of earth, which is the reference rotation period used by scientists. This period is 23 hours 56 minutes and about 4 seconds long. This gives about 1674.396 kilometers per hour at the equator.

it takes 24 hours
The circumference of the Earth at the equator is 25,000 miles. The Earth rotates in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles pass by in 24 hours, at a speed of 25000/24 or just over 1038 miles per hour(1669 kmph).

For those wanting a little more detail: The equatorial rotation velocity of the earth is 465.11 m/s (meters per second). This is based on the sidereal rotation of earth, which is the reference rotation period used by scientists. This period is 23 hours 56 minutes and about 4 seconds long. This gives about 1674.396 kilometers per hour.
The equatorial rotation velocity is 1,674.4 km/h. Locations closer to the poles are spinning proportionally slower, and at the poles there is no net movement except a turning motion at 0.006 rpm.

The Earth is very very gradually slowing down as some of the rotational energy (via the tides) causes the Moon to accelerate. This will slow the rotation by about 2 milliseconds every 100 years. At the same time, the Moon will also move (very very slowly) away from the Earth.
The Earth rotates once in a few minutes under a day (23 hours 56 minutes 04. 09053 seconds). This is called the sidereal period (which means the period relative to stars). The sidereal period is not exactly equal to a day because by the time the Earth has rotated once, it has also moved a little in its orbit around the Sun, so it has to keep rotating for about another 4 minutes before the Sun seems to be back in the same place in the sky that it was in exactly a day before.

An object on the Earth's equator will travel once around the Earth's circumference (40,075.036 kilometers) each sidereal day. So if you divide that distance by the time taken, you will get the speed. An object at one of the poles has hardly any speed due to the Earth's rotation. (A spot on a rod one centimeter in circumference for example, stuck vertically in the ice exactly at a pole would have a speed of one centimeter per day!). The speed due to rotation at any other point on the Earth can be calculated by multiplying the speed at the equator by the cosine of the latitude of the point. (If you are not familiar with cosines, I wouldn't worry about that now, but if you can find a pocket calculator which has a cosine button you might like to try taking the cosine of your own latitude and multiplying that by the rotation speed at the equator to get your own current speed due to rotation!).

On average it's 1,041.666667 mph.
It seems to be screaming around, making one revolution every 24 hours! ( I am lying here, it is really not 24 hours, but 23 hours 56 minutes 04. 09053 seconds. (Thus we need leap year to catch this issue).

If you are asking what the mph is, boy that varies! If you are standing at the top or bottom of the planet you are basically spinning at a very slow speed. At the equator, you are moving at about 1000 mph (25,000 miles a day)

The real speed is our speed around the sun! We are smoking around that at 6700 miles an hour!

Answer 6

The equatorial rotation velocity is 465.11 m/s.

Answer 7

201mph, i got this off my text book so it is true!

Answer 8

The earth's spins at an angle which is 23.5degrees

Answer 9

-- 1 rotation per 23hours 56minutes 4seconds (rounded)

-- 15 degrees per hour (rounded)

-- 1,050 miles per hour at the equator (rounded)

Answer 10

The earth rotates at about 15°/hr. On the earth's surface along the equator, which is a circumference of about 24901 miles (40075 km), that comes to about 1038 mph (1670 km/h).