A flipping coin on table will slow down and drop to the table surface, facing up or down. How can I calculate the flip-per-second declaration rate over time?

For example,

• assuming the coin is at 10 flipping per second when it starts
• how long will it take to stop?
• For each second (9, 8, 7, 6 ... 3, 2, 1, stop), how is the flipping rate changed?

Friction can be approximated as some real world objects (say, a metallic coin on a wooden table). Thanks!