The Earth rotates around its axis once in 24 hours and thus covers 3600 in 24 hours earth takes 4 minutes to cover one degree of latitude. 360 degrees in 24 hours 15 degrees per hour (15 / 3,600) ( 1/240 ) degree per second 0.25 minute of angle per second 15 seconds of angle per second. At the equator, the linear speed  1,520 feet (0.30 mile) per second.

Earth View

March 22, 2011 | Afifa Gillani | 1 Comment | 687 views