The metric or SI (Le SystÃ¨me International d'UnitÃ©s) system of units has many derived units from the seven base units. A derived unit would be a unit that is a combination of base units. Density would be an example where density = mass/volume or kg/m3. Many derived units have special names for the properties or measurements they represent. This table lists eighteen of these specialized units along with their basic unit factors.
Cadence (cycling) In cycling, cadence (or pedalling rate) is the number of revolutions of the crank per minute; this is the rate at which a cyclist is pedalling/turning the pedals. Cadence is directly proportional to wheel speed, but is a distinct measurement and changes with gearingâwhich determines the ratio of crank rpm to wheel rpm.
Similar to race nutrition, bike cadence is a personal style and skill. âA super high cadence or a low cadence may or may not work for you,â says Jared Gell, the head coach of Competitive Instinct Multisport and director of retail at Pacific Swim Bike Run in Stamford, Conn. âBut practicing riding at a higher than normal cadence does help your pedal stroke become more efficient.