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  2. Bicycle performance - Wikipedia

    en.wikipedia.org/wiki/Bicycle_performance

    For a flat criterium at 40 km/h, 1 km circuit, 4 corners per lap, 10 km/h speed loss at each corner, one hour duration, there would be 160 corner "jumps". For 90 kg rider and bike, this adds roughly one third effort compared to the same ride at a steady speed, and a mass reduction of 10% of the total system weight (bicycle, rider, and luggage ...

  3. Table of explosive detonation velocities - Wikipedia

    en.wikipedia.org/wiki/Table_of_explosive...

    Detonation velocity is the speed with which the detonation shock wave travels through the explosive. It is a key, directly measurable indicator of explosive performance, but depends on density which must always be specified, and may be too low if the test charge diameter is not large enough.

  4. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    In most US cities, a city block is between 1 ⁄ 16 and 1 ⁄ 8 mi (100 and 200 m). In Manhattan, the measurement "block" usually refers to a north–south block, which is 1 ⁄ 20 mi (80 m). Sometimes people living in places (like Manhattan) with a regularly spaced street grid will speak of long blocks and short blocks.

  5. Hull speed - Wikipedia

    en.wikipedia.org/wiki/Hull_speed

    Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode ...

  6. Transonic - Wikipedia

    en.wikipedia.org/wiki/Transonic

    Transonic (or transsonic) flow is air flowing around an object at a speed that generates regions of both subsonic and supersonic airflow around that object. [1] The exact range of speeds depends on the object's critical Mach number, but transonic flow is seen at flight speeds close to the speed of sound (343 m/s at sea level), typically between Mach 0.8 and 1.2.

  7. List of world records in masters athletics - Wikipedia

    en.wikipedia.org/wiki/List_of_world_records_in...

    Masters athletics is a class of the sport of athletics for athletes of over 35 years of age. The events include track and field, road running and cross country running.These are the current world records in various five-year-groups, maintained by WMA, the World Association of Masters Athletes, which is designated by the World Athletics (formerly IAAF) to conduct the worldwide sport of Masters ...

  8. Metre per hour - Wikipedia

    en.wikipedia.org/wiki/Metre_per_hour

    Metre per hour (American spelling: meter per hour) is a metric unit of both speed and velocity (Vector (geometry)). Its symbol is m/h or m·h −1 (not to be confused with the imperial unit symbol mph). By definition, an object travelling at a speed of 1 m/h for an hour would move 1 metre.

  9. O'Day 20 - Wikipedia

    en.wikipedia.org/wiki/O'Day_20

    [1] [4] The boat has a draft of 3.92 ft (1.19 m) with the centerboard extended and 1.17 ft (0.36 m) with it retracted, allowing operation in shallow water or ground transportation on a trailer. [1] [4] The boat is normally fitted with a small 3 to 6 hp (2 to 4 kW) outboard motor for docking and maneuvering. [1] [4]