It depends on the type of boat.
It is difficult to answer directly. Anywhere between 5 and 30.
If you state the type of boat a more accurate answer can be given.
The typical speed limits in most Canadian provinces are 50 km/h in cities, 80 km/h outside of cities, and 100 km/h on freeways. School zones usually have a speed limit of 30 to 40 km/h in cities and 50 km/h outside of cities.
The average walking speed is about 5 km/h or 3.1 mph. The typical speed range is from 4.5 km/h (or 2.8 mph) to 5.4 km/h (or 3.35 mph) which makes 3.1 a reasonable average.
Speed is distance/time. If you want to express the speed in km/h then convert time to hours: 45 min / (60 min/hour) = 0.75 hour. Then you have (15.0 km)/(0.75 h) = 20 km/h
The speed of the boat is 36 km/h. Going upstream: 3h x 36km/h = 108 km, minus (6x3 =18 km) = 90 km Going downstream: 2h x 36km/h = 72 km, plus (6x2 =12 km) = 90 km
The typical cruise speed of an MD 80 is Mach 0.76, which is 504 mph, or 811 km/h
30 km/h
60 min = 1 hr speed = distance/time = 16.3 km / 33 min = 16.3 km / (33 min ÷ 60 min/h) ≈ 29.64 km/h (Though boat speeds are usually given in knots = 1 nautical mile/hour, which in this case is approx 16 knots.)
If one's speed changes from 10 km/h to 6 km/h, one has decelerated.
Average speed is 4 km/h, maximum speed is about 8 km/h
I assume you mean kilometers per hour as a kilometer is a unit of distance, not speed. Tornadoes vary greatly in speed. They may be stationary or travel at more than 100 km/h. A typical tornado travels at about 50 km/h.
30 k/h
In general, the speed of a hunting cheetah averages 64 km/h (40 mph) during a chase, interspersed with a few short bursts when the speed may vary between 104 and 120 km/h (65 and 75 mph). The most reliable measurement of the typical speed during a short chase is 112 km/h (70 mph).