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NEA Boeing 747 flies much faster than it appears when seen from the ground. In reality, its normal cruising speed is around 900 to 920 km/h, and even at maximum it stays close to 980 to 1,000 km/h, not usually more than that. When a 747 is landing or taking off, its speed drops to roughly 250 to 290 km/h, which is why it can look slow and calm. From the ground, the aircraft seems to move gently because it is flying at a very high altitude, often 10 to 12 kilometres above the earth, and our eyes judge speed by visible movement rather than actual distance covered. Wind also affects what we observe: with a strong tailwind, the plane’s ground speed can approach 1,000 km/h, while headwinds reduce it. Despite this, the aircraft remains well below the speed of sound.
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