Derived Units (Edexcel A-Level Mathematics): Flashcards

Units derived from the seven fundamental SI units

Metres per second $(m/s)$

$\frac{\text{displacement}}{\text{time}}$

Vector quantity

Metres per second squared $(m/s²)$

$\frac{\text{change in velocity}}{\text{time}}$

Newton $(N)$

$F = ma$ (mass × acceleration)

Force to accelerate $1$ kg by $1$ $m/s²$

Kilogram metres per second $(kg·m/s)$

$p = mv$ (mass × velocity)

Joule $(J)$

$W = Fd$ (force × distance)

Watt $(W)$; $P = \frac{W}{t}$

Pascal $(Pa)$; $P = \frac{F}{A}$