Editor's Blog14 mins ago
Number Quiz
9 Answers
almost there - all answers are numbers
shipley cycle route; earths speed at equator; first recorded sighting of halleys comt; pennies in a guinea; manic street preachers song;
shipley cycle route; earths speed at equator; first recorded sighting of halleys comt; pennies in a guinea; manic street preachers song;
Answers
At the equator, the circumference of the Earth is 40,070 kilometers, and the day is 24 hours long so the speed is 1670 kilometers/hour ( 1037 miles/hr). This decreases by the cosine of your latitude so that at a latitude of 45 degrees, cos(45) = .707 and the speed is .707 x 1670 = 1180 kilometers/hr.