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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. [42] For example, the Kennedy Space Center is located at latitude 28.59° N, which yields a speed of: cos(28.59°) × 1,674.4 km/h = 1,470.2 km/h.
Earth's rotational speed is ν = 1 / 2π dθ / dt , and a day corresponds to one period P = 1 / ν .A rotational acceleration dν / dt gives a rate of change of the period of dP / dt = − 1 / ν 2 dν / dt , which is usually expressed as α = ν dP / dt = − 1 / ν dν / dt .
The rotation rate of the Earth (Ω = 7.2921 × 10 −5 rad/s) can be calculated as 2π / T radians per second, where T is the rotation period of the Earth which is one sidereal day (23 h 56 min 4.1 s). [2] In the midlatitudes, the typical value for is about 10 −4 rad/s.
Earth's rotational velocity is not constant over time. Any motion of mass in or on Earth causes a slowdown or speedup of the rotation speed, or a change of rotation axis. Small motions produce changes too small to be measured, but movements of very large mass, like sea currents, tides, or those resulting from earthquakes, can produce ...
The earth's rotational speed at this latitude is roughly equal to the speed of sound. One minute of longitude along the 42nd parallel is approximately 0.7456 nautical miles (0.8580 mi; 1.381 km). Around the world
Somewhat similarly, the friction of ocean tides from the moon’s gravitational pull slows the Earth’s rotation. Historically, that has had the largest influence on the planet’s rate of spin ...
[nb 1] Earth's orbital speed averages 29.78 km/s (19 mi/s; 107,208 km/h; 66,616 mph), which is fast enough to cover the planet's diameter in 7 minutes and the distance to the Moon in 4 hours. [3] The point towards which the Earth in its solar orbit is directed at any given instant is known as the "apex of the Earth's way". [4] [5]
The discovery indicates that the Earth’s center regularly pauses and reverses its rotation, researchers in China wrote in a study published Jan. 23 in the journal Nature Geoscience.