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UNIT DEFINITIONS NKS (SI) unit systo <br /> I. Base units <br /> m = 1L kg 1M sec = 1T coul E 1Q <br /> II. Angular measure <br /> rad = 1 zr <br /> deg -- rad <br /> 180 <br /> III. Derived units: Length <br /> can E .01-m km E 1000-m mm – .001-m <br /> ft E .3048-m in � 2.54- cm yd E 3- ft mi E 5280- ft <br /> IV. Derived units: Mass <br /> -3 <br /> gm E 10 - kg tonne = 1000- kg lb = 453.59247- gm <br /> (metric ton) (use convention that lb <br /> lb represents pounds mass. <br /> oz = — ton = 2000- lb <br /> 16 ("short" ton) slug E 32.174. 1b <br /> V. Derived units: Time <br /> min – 60- sec hr = 3600- sec day 24- hr <br /> yr = 365.2422- day (tropical year) <br /> VI. Derived units: Area, Volume <br /> 4 2 2. <br /> hectare � 10 •m acre 4840• yd <br /> 3 -3 <br /> liter E (.1•m) mL - 10 - liter <br /> (Sometimes defined with 3 <br /> "L" symbol.) fl oz - 29.57353• cm <br /> gal � 128- fl–oz <br /> -8 2 <br /> darcy = 10 - cm <br /> VII. Derived units: Velocity, Acceleration <br /> mi km <br /> mph — kph � — 3 <br /> hr hr ft <br /> cfm E - <br /> ---- min <br /> m <br /> g E 9.80665- (acceleration of gravity) <br /> 2 <br /> sec <br /> VIII. Derived units: Force, Energy, Power <br /> m -5 <br /> newton E kg- — .dyne = 10 - newton lbf g- lb <br /> 2 (pound force) <br />