Late Effects of Polio: The Medical. A. Polio: The Disease. Poliomyelitis (polio) is a viral illness that begins suddenly with flu-like symptoms of fever, headache, vomiting and/or diarrhea, muscle aching and feeling poorly.. The virus enters the body through the stomach and intestines.
Most crocodiles can sprint at a maximum speed of 6 to 7 miles per hour. The fastest crocodile on record was clocked at 11 miles per hour, during a full gallop. By contrast, top human race-walkers reach speeds of 8 miles per hour without breaking into a full run. Continue Reading.
Maximum Speed. The maximum swimming speed for humans is approximately 2 meters per second, or approximately 4.5 miles per hour, Dutch researchers Huub Toussaint and Martin Truijens reported in the journal Animal Biology in 2005 â only 16 percent of the maximum land speeds of elite human sprinters.