speed = 55ft/0.8s = 70ft/s (68.75 rounded to 1 significant figure)
500 feet per second = 340.9 mph
2500 feet per second (fps) is equivalent to approximately 1704 miles per hour.
21 feet per second is approximately 14 miles per hour.
Light travels at a speed of approximately 983,571,056 feet per second in a vacuum.
150 feet per second (fps) is equivalent to approximately 102 miles per hour or 164 kilometers per hour.
About 1,076.03 feet per second.
250 feet per second = 170.45 mph
300 feet per second = 204.54 mph
150 feet per second.150 feet per second.150 feet per second.150 feet per second.
120 miles per second equates to 633,600 feet per second.
22 feet per second = 6.7 metres per second = 0.0067 km per second
465 feet per second is equal to about 317 miles per hour.
395 (feet / second) = 269.32 mph
0.024384 kilometers per second
15.0 feet per second is equivalent to: 10.23 miles per hour.
64 feet per second.
It is 2,727 MPH. And that's fast.