Method and apparatus for measuring golf green speeds

A system comprising:

• a golf ball comprising
• a golf ball body,
• a motion sensor disposed within the golf ball body and configured to measure acceleration of the golf ball along each of three mutually perpendicular axis,
• a processor configured to determine a deceleration of the golf ball based upon the acceleration measured by the motion sensor, and wherein the processor is also configured to determine a frequency of signals provided by the motion sensor and to await the frequency falling below a predefined threshold prior to determining a deceleration of the golf ball,
• a transmitter disposed within the golf ball body configured to transmit data representative of deceleration of the golf ball;
• and
• a display device comprising,
• a receiver configured to receive data representative of the deceleration of the golf ball from transmitter, and
• a display configured to provide a representation of a measure of the deceleration of the golf ball.