組立量
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定義
SI基本量（長さ、質量、時間、電流、熱力学温度、物質量、光度）の数学的組み合わせで定義される物理量。
解説
Speed is a derived quantity: distance ÷ time = m/s. Force is mass × acceleration = kg·m/s², given the special name newton. Pressure = force ÷ area = kg/(m·s²), given the special name pascal. The SI system currently recognizes 22 derived units with special names, all traceable to the 7 base units through exact mathematical definitions.
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