# physics paper 2 equations gcse 9-1

• Created by: ryley8979
• Created on: 14-06-18 20:28

## weight

weight (N) = mass (kg) x gravitational field strength (N/kg)

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## work done

work done (J) = force (N) x distance (m)

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## force

force (N) = spring constant (N/m) x extension (m)

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## elastic potential energy

elastic potential energy (J) = 1/2 x spring constant (N/m) x extension(squared) (m)

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## momentem of a force

momentem of a force (Nm) = force (N) x distance (m)

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## pressure

pressure (Pa) = force on a surface (N) / area of that surface (m(squared))

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## pressure

pressure (Pa) = height (m) x g.f.s (N/kg) x density (kg/m(cubed))

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## distance travelled

distance travelled (m) = speed (m/s) x time (s)

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## acceleration

acceleration (m/s(squared)) = change in velocity (m/s) / time (s)

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## uniform acceleration

final velocity(squared) (m/s) - initial velocity(squared) (m/s) = 2 x acceleration (m/s(squared)) x distance (m)

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## resultant force

resultant force (N) = mass (kg) x acceleration (m/s(squared))

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## stopping fistance

stopping fistance = thinking distance + breaking distance

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## momentum

momentum (kg m.s) = mass (kg) x velocity (m/s)

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## force

force (N) = change in momentum (kg m/s) / change in time (s)

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## period

period (s) = 1 / frequency (Hz)

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## wave speed

wave speed (m/s) = frequency (Hz) x wavelength (m)

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## angle

angle of incidence = angle of reflection

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## magnification

image height / object height

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## force

force (N) = magnetic flux density (T, tesla) x current (A) x length (m)

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## transformer equations

input potential difference (v) / output potential difference (v) = number of turns on primary coil / number of turns on secondary coil

potential difference across secondary coil (v) x current through secondary coil (A) = potential difference across primary coil (v) x current through primary coil (A)

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