11. Rotational speed ( or " angular speed " ) involves the number of revolutions per unit of time. 12. Rotational speed and angular speed are sometimes used as synonyms, but typically they are measured with a different unit. 13. And surely angular speed should be angular velocity .-- Shantavira 10 : 05, 13 September 2006 ( UTC) 14. Given a rotating frame composed by three unitary vectors, all the three must have the same angular speed in any instant. 15. Since there are 2? radians per cycle, or 360 degrees per cycle, we can convert angular speed to rotational speed by 16. In this case not only the distance, but also the speed, angular speed , potential and kinetic energy are constant. 17. This causes it to fall into a lower orbit, which actually increases the angular speed of the satellite around the Sun. 18. He found that the difference between the maximum and minimum angular speeds of a planet in its orbit approximates a harmonic proportion. 19. This is because although H & changes at a nearly steady rate there is considerable variation in the angular speed of the Sun. 20. The computer was connected to a display that showed this angular speed as a series of lines moving downwards at that angular velocity.
