SortStack #2122 — 2032-03-31

By speed · Order from slowest to fastest.

1. A king penguin waddling on land 2.8 km/h

   A penguin's waddle is surprisingly efficient, storing and releasing energy with each side-to-side rock.

2. A running pig 17 km/h

   Pigs are smarter than dogs by many measures, able to learn their names and even play simple video games.

3. An electric scooter 25 km/h

   Shared e-scooters exploded across cities in just a few years, becoming a common sight on sidewalks worldwide.

4. A Category 5 hurricane's winds 300 km/h

   A single mature hurricane can release more energy in a day than the world uses in electricity all year.

5. 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.

6. A .220 Swift rifle bullet 4.4K km/h

   Among the fastest commercial rifle rounds, it leaves the barrel so quickly the bullet can melt slightly in flight.

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