SortStack #1604 — 2030-10-30

By speed · Order from slowest to fastest.

1. A red fox 51 km/h

   Foxes may use Earth's magnetic field to aim their pounces, lining up on prey hidden under snow.

2. A running reindeer 80 km/h

   Reindeer eyes change colour with the seasons, turning blue in winter to see better in the dim Arctic light.

3. A helicopter at top speed 290 km/h

   A helicopter's top speed is capped because the blade tips would approach the sound barrier and lose lift.

4. A bullet from a .357 Magnum 1.5K km/h

   A supersonic bullet creates a tiny sonic boom, which is part of the sharp crack you hear from a gunshot.

5. Concorde at cruising speed 2.2K km/h

   Concorde flew so fast that the friction heated its frame, stretching the whole plane several inches in flight.

6. A bullet from an AK-47 2.7K km/h

   The AK-47 is the most widely produced firearm in history, prized for working even when caked in mud and sand.

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