要自轉幾快，先可以對抗地球嘅自轉？ Earth revolves around the Sun at a rate of about 67,000 miles per hour (107,000 km/hr or nearly 30 km/s). At the same time, Earth rotates around its axis at about 1,000 miles per hour (460 m/s or 1,600 km/hr) at the equator. https://study.com/academy/lesson/earths-rotation-facts-speed.html#:~:text=Earth%20revolves%20around%20the%20Sun,%2Fhr)%20at%20the%20equator.