Please try again later. Watch this video to properly learn how to rethread your Safety 1st Alpha Omega car seat harness. Also applies to the Cosco Alpha Omega, Safety 1st Alpha Omega All in One, Able 65, Aquos 65 and All in One Sport car seats.atch this video to properly learn how to rethread your Safety 1st Alpha Omega car seat harness.
Story highlights. 1  Chuck Yeager was the first test pilot to break the sound barrier. 2  In 1947, he flew past Mach 1 after being dropped from a B-29 bomber at 45,000 feet. 3  Yeager said he laid down a pretty good sonic boom over Edwards Air Force Base.
Simply put, the denser the material the faster the sound waves travel. The speed of sound through air at ground level is approximately 760 mph, or approximately 1100 feet per second. The old lightning/thunder trick offers a good example. For approximately every five seconds the sound travels is one mile.