Examples of Radial velocity calculations with formulae. Radial velocity calculations with formulae. Revoulations Per Minute rpm Radial Velocity Radian/sec calculate Example Example 1 of Radial velocity calculatios. Revoulation per minute = 1 Formula: R = (2 × π × n) / 60 Result = 0.104666667 Example 2 of Radial velocity calculatios. Revoulation per minute = 12 Formula: R = (2 × π × n) / 60 Result =1.256 List of All Calculations of Astrodynamics Physics : Click Here .