SortStack #1800 — 2031-05-14

By speed · Order from slowest to fastest.

1. The growth of human hair 175.3 mm/year

   Scalp hair grows roughly 1.25 centimetres a month, so a single strand reaching your shoulders is years old.

2. The creep of a mountain glacier 175320 mm/year

   Glaciers flow downhill under their own weight like very slow rivers of ice, grinding valleys as they go.

3. A running roadrunner 32 km/h

   Real roadrunners prefer sprinting to flying and can kill rattlesnakes, far from the cartoon's gentle dodging.

4. A powerful soccer free kick 132 km/h

   A well-struck free kick can swerve in mid-air as spin and airflow bend its path around a defensive wall.

5. A record fastball pitch 169 km/h

   A 100-mile-an-hour pitch reaches home plate in under four-tenths of a second, faster than a blink of choice.

6. A car cruising the German autobahn 200 km/h

   Parts of Germany's autobahn have no speed limit, where ordinary sedans legally travel faster than racetracks allow elsewhere.

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