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The Earth rotates about its axis every \(23\) hours, \(56\) minutes, and \(4\) seconds. The radius of the Earth is \(3960\) miles.

 

What is the linear speed of a point on the Earth's equator (in miles/hour)?

 Mar 1, 2023
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3960  x 2 ==7,920 miles - Earth's diameter at the equator.


Circumference ==Diameter  x  Pi


Circumference ==7,920  x  3.141592 ==24,881.41 - miles at the equator


Speed ==Distance (Circumference) / Time

 

4/3600 + 56 / 60 + 23 ==23.93444444......hours taken for 1 full rotation of Earth at equator.


Speed ==24,881.41 / 23.93444..


Speed ==1,039.56 miles per hour.

 Mar 1, 2023

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