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The champion runner is the American cockroach, which can sprint on its hind two legs at a pace of 50 body lengths per second.
Cockroaches, darting for darkness, look awfully fast, at fifty body lengths per second, but get them out on the track and that's just around three miles per hour.
For example, two muscles in the limbs of mice have maximum shortening speeds (at 37 °C) of 24 and 13 lengths per second.
The 9-inch-high machine, called RunBot, has already been shown to be able walk at a good clip (about 3.5 leg lengths per second, compared with a sprinter's 4 to 5 per second).
The smaller C. eburneola can travel 171 body lengths per second, well ahead of C hudsoni (120bl/s) and P. americana (50bl/s).
For example, dinoflagellates can sustain swimming speeds of 10 body lengths per second, and copepod escape responses have been clocked at 35 cm per second.
Similar(29)
This gives the rods enough power to spin around and move up to 100 times their own body length per second in water.
If a muscle shortens by one-tenth of its length in one-tenth of a second, its rate of shortening is one length per second.
Half the size of a shoebox, it can scamper at a rate of five times its own body-length per second.
It can achieve an average velocity of one body length per second.
Since the body length was 11 cm, the speed in body length per second (BL/s) was 0.067.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com