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GCSE Physics · key term
A unit formed by combining two or more units, usually by multiplication or division, such as metres per second.
Used by OCR
Specification P2.1c, P8.1c · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Unit conversionMixing metres with hours without accounting for the different units would give a different compound unit and could produce an incorrect result.
A unit formed by combining other units through multiplication or division, such as metres per second.
For a compound unit, convert the numerator and denominator separately. Do not apply the same multiplier blindly to the whole value.
In a compound unit, convert the numerator and denominator separately. Remember that “per” means division, so changing the time unit affects the divisor.
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