21 knots is roughly 25 miles-per-hour.
35
maybe 3400milkes per hour?
It is81.25 miles per hour
about 53 miles per hour
About 25.3 miles per hour.
32.3 miles per hour.
7
90 kilometers per hour is 55.92 miles per hour.
0.17 miles per hour = 0.274 kilometers per hour.
In an hour you can move 3 miles. Not so fast.
66 Miles Per Hour
15 kilometers per hour is 9.32 miles per hour.