5 km per second = 18,000 km/h or 11,184.7 miles per hour.
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5 km per second is equivalent to 18,000 km per hour. This is very fast, nearly 11,185 miles per hour. For context, the speed of sound is around 1,225 km per hour.
It is: 5/8*245 km = 153.125 miles
To convert km per hour to cm per second, you need to multiply the km per hour value by 27.7778. This is because there are 100,000 centimeters in a kilometer and 3,600 seconds in an hour. So, 1 km/h is equivalent to approximately 27.7778 cm/s.
2.2 meters per second = About 5 mph (4.92125984)
About 10-70 km/second or 6.2-43.5 miles/secondFor comparison:Bullets travel slower than 2 km/second or 1.2 miles/second.Low earth orbital velocity is about 7.8 km/second or 4.8 miles/secondGeosynchronous orbital velocity is about 3 km/second or 1.9 miles/secondHigh explosive detonation wave velocities are about 5-10 km/second or 3.1-6.2 miles/secondNuclear explosive detonation wave velocities are about 300 km/second or 186.4 miles/second
the official unit for speed is m/s (metres per second) 1 metre = approx 3'3'' but in cars and aircraft and roads and so on it is km/h (kilometres per hour) 1 km = 1000 metres 1 km = approx 5/8 mile.