15.0 feet per second is equivalent to: 10.23 miles per hour.
293.2 miles per hour.
1200 feet per second is equivalent to approximately 818 miles per hour.
395 (feet / second) = 269.32 mph
About 4,132 miles per hour.
About 20.5 miles per hour.
3,600 miles per hour.
465 feet per second is equal to about 317 miles per hour.
It is 2,727 MPH. And that's fast.
280 feet per second is 190.91 miles per hour.
500 feet per second is equivalent to approximately 341.8 miles per hour.
That is 146.7 feet per second.