Engineering quantities (pressure, temperature, power, and so on) need to be expressed in terms of an agreed system of units. SI units Système International d’Unités) have been adopted in the UK and in many other countries, so we shall use them in this book. The system is founded on seven base units and two supplementary units from which all the others are derived.
KeywordsBase Unit Vector Quantity Supplementary Unit Successive Displacement Simple Arithmetic Operation
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