SortStack #3095 — 2034-11-29

By speed · Order from slowest to fastest.

1. A slowly marching sand dune 20161.8 mm/year

   Wind pushes desert dunes forward grain by grain, swallowing roads and even villages over the decades.

2. A garden snail 50 m/h

   A snail can sleep for up to three years during droughts, sealing itself inside its shell until rain returns.

3. A yellowfin tuna 73 km/h

   Tuna are warm-blooded among mostly cold-blooded fish, letting their muscles fire faster for high-speed chases.

4. A fast cricket delivery 161 km/h

   The fastest bowlers can make the ball rise off the pitch toward a batter's head in a fraction of a second.

5. 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.

6. A Boeing 747 cruising 920 km/h

   The 747's hump exists because the cockpit was put on an upper deck so the nose could hinge open for cargo.

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