One hertz is equal to one cycle per second. Hence, one kilohertz (kHz) is equal to 103 cycles per second, one megahertz (MHz) is 106 cycles per second, and one gigahertz (GHz) is 109 cycles per second.
First of all, it's not an electronics question, but more a geometry or mechanics question. Second, degrees and meters are not related unless the degrees are of an arc, and there is a radius being...
the tangential velocity is equal to the angular velocity multiplied by the radius
the tangential velocity is equal to the angular velocity multiplied by the radius