solar physics

dairo · #1 Nov 7, 2009, 10:23 AM

what is the average velocity of the earth`s rotation and revolution?

dairo · Nov 7, 2009, 10:25 AM

what is the average velocity of the earth`s rotation and revolution?

excon · Nov 7, 2009, 11:09 AM

Hello d:

The Earth is moving around the Sun at about 67,000 miles per hour. Earth's equatorial speed is slightly less, or 1,669.8 km/h.

That took about 3 seconds of googling. You should try it.

excon

Unknown008 · Nov 7, 2009, 06:59 PM

You could try calculating it using the formula for the circumference of a circle.

$Circumference = 2\pi r$

If you know the radius of the Earth, an average, you have approximately 6 400 000 m.

That makes the circumference as 40 212 386 m.

Now the Earth takes 24 hours to make a complete revolution, that means that the speed is 40 212 386/24 = 1 675 516 m/h = 1 675 km/h

And you'll see it's really close to the actual speed, that excon gave.



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