100m/sec http://hypertextbook.com/facts/2002/DavidParizh.shtm 100m/sec Speed of nerve impulses http://hypertextbook.com/facts/2002/DavidParizh.shtml http://hypertextbook.com/facts/2002/DavidParizh.shtml this 20-30m/s 0.01 second 390 feet per second http://hypertextbook.com/facts/2002/DavidParizh.shtml http://hypertextbook.com/facts/2002/DavidParizh.shtml Source ١٢٠ م/ث 20-30m/s http://hypertextbook.com/facts/2002/DavidParizh.shtml