Physics GCSE ALL Word Equations and Symbol Equations and Units of Measurements (to memorise)

weight (symbol)

w (symbol)

weight (unit)

N (Newtons - weight)

mass (symbol)

m (symbol)

mass (unit)

kg (kilograms)

gravitational field strength (symbol)

g (symbol)

gravitational field strength (unit)

N/kg (Newtons per kilogram)

weight (formula)

mass x gravitational field strength

spring constant (symbol)

k (symbol)

spring constant (unit)

N/m (Newtons per metre)

spring extension (symbol)

e (symbol)

spring extension (unit)

m (metres - spring)

force applied to a spring (formula)

spring constant x spring extension

acceleration (symbol)

a (symbol)

acceleration (unit)

m/s squared (metres per second squared)

velocity (unit)

m/s (metres per second - speed and direction)

time (symbol)

t (symbol)

time (unit)

s (seconds)

acceleration (formula)

change in velocity / time taken

momentum (symbol)

p (symbol)

momentum (unit)

kg.m/s (kilogram metres per second)

kg.m

kg x m

velocity (symbol)

v (symbol - speed and direction)

momentum (formula)

mass x velocity

gravitational potential energy (symbol)

Ep (symbol)

gravitational potential energy (unit)

J (Joules - gravitational potential)

height (symbol)

h (symbol)

height (unit)

m (metres - height)

gravitational potential energy (formula)

mass x gravitational field strength x height

power (symbol)

P (symbol)

power (unit)

W (Watts)

work done (symbol)

W (symbol)

work done (unit)

J (Joules - work done)

power (formula - work done, time)

work done / time

efficiency (formula - power)

useful power output / total power input

efficiency (unit)

% (percentage)

charge flow (symbol)

Q (symbol)

charge flow (unit)

C (Coulombs)

current (symbol)

I (symbol)

current (unit)

A (Amperes)

charge flow (formula)

current x time

potential difference (symbol)

V (symbol - electric circuits)

potential difference (unit)

V (Volts)

power (formula - potential difference, current)

potential difference x current

energy transferred (symbol)

E (symbol)

energy transferred (unit)

J (Joules - energy)

energy transferred (formula - power, time)

power x time

density (symbol)

p (symbol - rho)

density (unit)

kg/m cubed (kilograms per metre cubed)

volume (symbol)

V (symbol)

volume (unit)

m cubed (metres cubed)

density (formula)

mass / volume

force (symbol)

F (symbol)

force (unit)

N (Newtons - force)

distance (symbol)

s (symbol)

distance (unit)

m (metres - distance)

work done (formula)

force x distance (along the line of action of the force)

speed (symbol)

v (symbol - speed only)

speed (unit)

m/s (meters per second - speed only)

distance travelled (formula)

speed x time

resultant force (formula)

mass x acceleration

kinetic energy (symbol)

Ek (symbol)

kinetic energy (unit)

J (Joules - kinetic)

kinetic energy (formula)

0.5 x mass x speed squared

power (formula - energy transferred, time)

energy transferred / time

efficiency (formula - energy)

useful output energy transfer / total input energy transfer

frequency (symbol)

f (symbol)

frequency (unit)

Hz (Hertz)

wavelength (symbol)

λ (symbol - lambda)

wavelength (unit)

m (metres - wave)

wave speed (formula)

frequency x wavelength

resistance (symbol)

R (symbol)

resistance (unit)

Ω (omega - Ohms)

potential difference (formula)

current x resistance

power (formula - current, resistance)

current squared x resistance

energy transferred (formula - charge flow, potential difference)

charge flow x potential difference

w (formula)

m x g

F (formula - k, e)

k x e

a (formula)

∆v / t

p (formula)

m x v

Ep (formula)

m x g x h

P (formula - W, t)

W / t

Q (formula)

I x t

P (formula - V, I)

V x I

E (formula - P, t)

P x t

p (formula - rho)

m / V

W (formula)

F x s

s (formula)

v x t

F (formula - m, a)

m x a

Ek (formula)

0.5 x m x v squared

P (formula - E, t)

E / t

v (formula)

f x λ (lambda)

V (formula)

I x R

P (formula - I, R)

I squared, R

E (formula - Q, V)

Q x V