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No, this does not mean that the 747 travels at the speed of sound. The 747's travel time is simply longer due to its slower speed compared to Concorde. Concorde's speed is faster than the speed of sound, allowing it to reach New York in half the time of a 747.
The maximum speed of a Boeing 747 is approximately 570 mph or 920 km/h. However, this speed can vary depending on factors such as altitude, weight, and weather conditions.
The stall speed of an airplane is inversely proportional to the square root of the load factor. Therefore, with a load factor of 4, the stall speed would be 35 knots (70 knots / √4).
A Boeing 747 typically cruises at a speed of around 550-600 miles per hour (880-960 kilometers per hour).
The takeoff speed of a Boeing 747 can vary depending on factors such as weight, runway length, and weather conditions. However, generally speaking, the takeoff speed of a Boeing 747 is around 180-200 knots (207-230 mph).