what is the rotational speed of the earth? and in what direction?
476223
The Earth rotates once in 24 hours, and its (equatorial) radius is 3,963 miles (6,378 km). As with the Moon, the rotational speed starts at zero at either geographic pole and increases as you head toward the equator, where it reaches its maximum of about 1038 mi/hr (1669 km/hr). At 45 degrees north or south latitude, the rotational speed is about 0.7 of this maximum speed.
151979
I tried to figure this out and it's incredibly complex, as it turns out.\n\nThe earth rotates at a little over 1037 miles an hour, so you've got that.\n\nThe earth revolves around the sun at about 66486 miles an hour, so you add that.\n\nThen you consider that the sun is moving toward other stars at 45,000 miles per hour.  (and taking us along with it.)  So if you were outside our solar system, you'd see that too, I guess.\n\nThen you add that the sun moves up and down (if you consider the disk of the solar system to be the horizon) at about 261 mph.\n\nThen you add in the sun revolving around the galaxy, which is a difficult thing to calculate, but it can be figured that the sun revolves around at about a blistering 447,386.4 miles per hour.\n\nAdd that all up and you see that, relative to a person standing OUTSIDE the galaxy, we're moving at ABOUT....\n\n\n493,684 miles per hour!  That's awfully fast!\n\nNow, I have no idea how to calculate this, but the whole galaxy is moving as the universe expands...\n\nBut, hope that gives you somewhat of an answer.
340001
The earth turns with respect to the motion of force which was placed upon it with in the vacuum of space, and also with respect to the vacuum of space there is no friction to slow it down, therefor it shall continue to spin forever if it's motion is uninterrupted, or unaltered by another matter energy object of aether large size, or fast speed impacting it with direct respect to the angle of the interaction.\n\nas for your second question the axis is the center point at which the spin turns, and is therefore recognized by us with respect to the earths motion spin as the axis, and if the motion and direction of spin were changed tomorrow to be perpendicular of that which it is today, then the new axis would be perceived tomorrow as existing at some point at which we recognize the equator today.
35969
The Earth rotates (spins around).  Sometimes a side is facing the Sun and is in daytime.  Sometimes it is not and is in nighttime.
515806
The earth rotates on its axis (spins) the same way as the sun does on its axis, since the planets all formed out of the proto-solar disc when the sun was forming.  All of the planets spin the same way, EXCEPT for Venus, which rotates (very slowly, once every 243 days) in the opposite direction.  Some planetary scientists consider this evidence that Venus at one time collided with another large body early in its lifetime, which caused the retrograde rotation.
256497
around 1/6th that of earth so around 1.64m/s
559917
First, the speed of the rotation of the earth relative to where you are on the earth.  At the equator, the circumference of the Earth is roughly 24000 miles.  This is convenient, because the Earth rotates about its axis once every 24 hours.  Therefore an hour = 1000 miles of equatorial rotation.  Understand the fastest moving part of the Earth is the equator, since an object on the equator travels 24000 around the earth's Axis every day.  If you are closer to the poles, you are on a "thinner" slice of the earth, where the circumferene may only be 20000miles.  In that case you are moving at 833 miles per hour.  The fact that the Earth moves faster at the Equator than at the poles is responsible for the Coriolus Effect which is really important to people who study meteorology, or who wonder why their toilets get all swirly when flushed.  Why we don't "feel" the rotation is, simply put, because we are rotating exactly the same way as the earth.  In physics, this is called a "frame of reference".  For most intents and purposes, the earth is at "rest" relative to us.  As a human, you make up part of the mass of the earth, and you spin with it in a constant rotation.  It's only when we look to things that are not directly connected to the earth that we really see the effects of it's rotation (ie Tides of water, moments of clouds and weather, etc. . .)  Hope that helps.
20798
The Earth spins from west to east at about 900 mph. Looking from above the Earth's North Pole, the Earth rotates counter-clockwise around the Sun.
1023043
At the same moment exactly 1 year later the Earth will be (relative to the sun), in exactly the same place.  However, Earth and the rest of our solar system are also located in an outer arm(called the Orion arm) of our Milky Way galaxy which is rotating, so Earth is also travelling 155.25 miles per second around our galaxy.  In addition, our galaxy is a part of a large group of galaxies and so Earth is moving 114.885 miles per second relative to these galaxies.  And finally Earth, along with the solar system, our own galaxy and the local group of galaxies is moving through the Universe at a speed of 370 miles per second.
299849
The 24 hour clock was originally devised by the ancient civilisations of Egypt, India and China. It has stuck ever since.\n\nIt actually takes the Earth 23 hours, 56 minutes and 4 seconds to rotate 360 degrees. The reason for the extra 4 minutes or so it that the earth has to rotate just that little bit more (361 degrees) because it has orbited the sun a little during that period.
537517
The speed at which the earth spins varies upon your latitudinal location on the planet. If you're standing at the north pole, the speed is almost zero but at the equator, where the circumference of the earth is greatest, the speed is about 1,038 miles per hour (1,670 kph). The mid-latitudes of the U.S. and Europe speed along at 700 to 900 mph (1125 to 1450 kph).
481150
the earth spins at 1500 mph.  If you take a ball and spin it extreemly fast you will find that the center of the ball will grow and the poles will flatten.  It is like driving a car very fast.  The higher up ion speed you go the lower to the ground it will become.  I has to do with Volocity.
617247
Hint: The Earth revolves 7.5 degrees every 30 minutes.
558842
The rotation of the Earth on it's axis does not vary, but the speed of orbit about the sun does, to a tiny degree.  Earth is slightly closer to the sun in the winter months, thus orbits slight faster (and I mean infinitesimally faster).\nAs far as speed- Earth is about 25,000 miles in circumference, if orbits exactly once a day (24 hours) to the speed is a little over 1,000 miles an hour.\nEarth is 93 million miles from the sun, on average-this means the total orbital distance is 93 million X 2 X 3.14 = 584 million miles.  It goes this far in exactly 1 year-364.8 day or (364.8 X 24) 8733 hours. So, 584 million/8733 = about 66,500 miles/hour.  I just checked online and it says about 65,000, so there ya go
982746
It rotates around its axis every 23 hours and 56 minutes. The circumference of the equator is 40,075 km. That means the equator is moving at a speed of 1674 km/h. The atmosphere moves with the ground, which is why we're not blasted into space by 1000 mph winds.\n\nIt revolves around the Sun every 365.24 days ata radius of about 150 million kilometres. That makes its orbital speed 108,000 km/h.
998543
"how do we know the earth spins?"\n\n:  )
199932
The earth's rotation.