How fast are you traveling if you stand still on the equator and on 40 degrees North parallel in kilometers and in miles per hour?

1 Answer

Answer :

The answer depends on what you consider to be the fixed frame of reference. In order to rotate once during 24 hours, a point on the equator is moving at approx 1600 km per hour (1000 mph). But the earth is also revolving around the sun and this requires it to travel the 970 million km orbit in one year. This is approx 107,000 km per hour (66,000 mph). Furthermore the sun is wandering around relative to other stars in our local neighbourhood. It is moving towards Vega at around 70,000 km per hour (43,000 mph). Next, the sun and its local neighbours are all part of the spinning of the Milky Way Galaxy and that causes the sun to move, relative to the galactic centre at approx 792,000 km per hour (483,000 mph). Beyond that, there is the motion of the Milky Way Galaxy towards the Andromeda Galaxy, and the motion of the Local Cluster and so on (ad infinitum).So the key question is how fast you are moving relative to WHAT?

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