Earth takes about 23 hours 56 minutes to rotate once about its axis. Using the radius for Earth of 3960 miles, find linear speed in miles per hour (relative to Earth's center) of person standing on equator? (for purpose of problem, such motion as rotation of Earth about the Sun.)
The minute hand of the clock extends out to edge of clock's face, that is circle of radius 2 inches. What area minute had sweeps out between 9:05 and 9:25?