Temp and Barometric change that number. 754 MPH is the speed of sound at 200 feet off the deck 69F at 29.97 Bar ... ask me how I know.... BOOM.
But only if the humidity is? Dave_n
Temp and Barometric change that number. 754 MPH is the speed of sound at 200 feet off the deck 69F at 29.97 Bar ... ask me how I know.... BOOM.
60 miles an hour is 88 feet per second. The rest is up to you.