Physics equations GCSE year 2025 Flashcards
Equation to find kinetic energy
Kinetic energy = 0.5 X mass x speed squared
Equation to find Gravitational potential energy
GPE = Gravitational force strength X mass X height
Equation to find power (energy)
Power = work done/ time taken OR Power = energy transferred/ time taken
Equation for elastic potential energy
Elastic potential energy = 0.5 X spring constant X extension squared
Equation for change in thermal energy
Change in thermal energy = mass X specific heat capacity X temperature change
Equation used to calculate charge flow
Charge flow = current X time
Equation used to calculate potential difference
Potential difference = current X resistance
Equation used to find total resistance
Total resistance = resistance of compartment 1 + resistance of compartment 2
Equations to find power ( electricity)
Power = current X potential difference
OR
Power = current squared X resistance
Equations to find energy transferred
Energy transferred = power X time
OR
Energy transferred = charge flow X potential difference
Equation to calculate density
Density = mass / volume
Equation used to calculate thermal energy used for a change in state
Thermal energy for a change in state = mass X specific latent heat
Equation used to calculate thermal energy used for a change in state for a gas
Pressure X volume = constant
Equation used to calculate wave speed
Wave speed = frequency X wavelength
Equation used to calculate time period ( waves)
Time period = 1 / frequency
Equation for magnification ( waves)
Magnification = image height / object height
Equation to find weight
Weight = mass X gravitational field strength
Equation to find work done
Work done = force X distance
Equation used to find force
Force = spring constant X extension
OR
Change in momentum / time taken
Equation for moment of a force
Moment of a force = force X distance
Equation to find pressure
Pressure = force normal to a surface / area of that surface
OR
Pressure = height of column X density of liquid X gravitational field strength
Equation used to find distance travelled
Distance = speed X time
Equation used to find acceleration
Acceleration = change in velocity / time taken
OR
Acceleration = final velocity - initial velocity / time taken
Equation for resultant force
Resultant force = mass / acceleration
Equation to find momentum
Momentum = mass X velocity
Final velocity squared - initial velocity squared = ???
Final velocity squared - initial velocity squared = 2 X acceleration X distance
