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- Nathan BirnbaumLv 69 years agoFavorite Answer
Rotation of the Earth - The tangential speed of Earth's rotation at a point on Earth can be approximated by multiplying the speed at the equator by the cosine of the latitude. For example, the Kennedy Space Center is located at 28.59° North latitude yields speed: 1,674|km/hr * cos (28.59) = 1,470.23 kilometres per hour (913.56 mph) [1]

Orbit of the Earth around the Sun - The Earth is orbiting the Sun once a year. The circumference of the Earth's orbit is approx. 607.6 million miles {or 940 million kilometers}. One year is approx. 365 days

365 days X 24 = 8760 hours

607,600,000/8760 = 69,360.73 MPH

[2]

Source(s): [1] http://en.wikipedia.org/wiki/Rotation_of_the_Earth [2] http://www.thelivingmoon.com/41pegasus/02files/Spe... - 9 years ago
average surface speed is around 1000 miles per hour . in orbit the space station speeds are around 1700 mph

Source(s): sience refrence books

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