Terminal velocity in a flat dive (like pancaking into a pool) is 32f per second sq, or 120mph BELOW 15, 000 ft. The higher you go, the thinner the atmosphere and the higher terminal velocity is. Also, tucking in your arms and legs will cause your speed to increase as you reduce the wind resistance, up to 200mph below 15,000ft. The theory (unproven, naturally) is that an unprotected body dropped from a height of 100,000ft would flash freeze and break apart as it tumbled towards the earth, similar to an ice cube shattering. Any remains would scatter over an area over 500 sq miles, blown by 'winds aloft'.
Source: USAF Col Joe Smith ret. (SR-71 pilot), The Society of Experimental test Pilots. We were getting drunk one night and I asked him
Source: USAF Col Joe Smith ret. (SR-71 pilot), The Society of Experimental test Pilots. We were getting drunk one night and I asked him