As part of the male reproductive system, the prostate glandâs main purpose is to secrete a slightly alkaline fluid that forms part of the seminal fluid, a fluid that carries sperm.
Average Speed. If you take the average speed of the current world 100 m record (Bolt's 9.58 s), you get about 10.44 meters/sec (23.35 miles/hr, 37.58 km/hr). However, if you were to record instantaneous speed at different points throughout the race, the runner would reach a maximum speed much greater than this.
I'll assume that you were asking for the fastest 5k run completed by a human. Based on basic physiological difference, we can restrict our search to men. The current world record is held by Kenenisa Bekele at 12:37.35. Records have only been recorded since 1912, so it is technically possible that a faster 5k was run at some point before record keeping.