SortStack #491 — 2027-10-13

By speed · Order from slowest to fastest.

1. A scurrying hedgehog 6.4 km/h

   A startled hedgehog rolls into a tight ball, raising up to 6,000 spines that few predators dare to bite.

2. A falling raindrop 34 km/h

   Raindrops are not teardrop-shaped; they flatten into tiny hamburger buns as they fall through the air.

3. A cheetah at full sprint 120 km/h

   A cheetah can go from a standstill to highway speed faster than most sports cars, but only for a few seconds.

4. A Cessna light aircraft 220 km/h

   The Cessna 172 is the most-produced plane in history and the trainer that taught millions of pilots to fly.

5. A downhill speed skier 255 km/h

   Speed skiers tuck into an egg shape and wear airfoil helmets, accelerating faster than a free-falling skydiver.

6. The speed of sound at sea level 1.2K km/h

   Sound travels faster in warm air than cold, so a thunderclap's timing shifts slightly with the weather.

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