Yes, it is over Mach 1 at that altitude. Virtual E6B:http://www.luizmonteiro.com/Altimetry.htm

The human body in free fall can exceed Mach 1 from very high altitudes as was proven in balloon jumps from 100,000 feet. Joe Kittinger:http://www.youtube.com/watch?v=5BOK1aMIhp4