b) Derived units

b) derived units of S.I. base units

to convert a unit to its S.I. base unit equivalent

• find a formula for the quantity

  • R = V/I

• substitute every non-S.I. base quantity with a formula that contains S.I. base quantities

  • R = W/QI

• repeat until all quantities are S.I. base quantities

  • R = Fd/I²t

  • R = mad/I²t

• substitute every quantity with its unit

  • R = kgms^-2m / A²s

• simplify the expression

  • R = kgm²s^-3mA^-2