GCSE Physics Equations Flashcards

Study Notes

Kinetic energy formula: KE = 0.5 x mass x (speed)²
Gravitational potential energy (GPE) formula: GPE = mass x gravitational field strength x height
Power defined as work done (energy) over time: Power = work done / time
Efficiency calculated by the ratio of output to input, multiplied by 100: Efficiency = (output/input) x 100

Charge flow expressed as the product of current and time: Charge flow = current x time
Potential difference (voltage) calculated using: Potential difference = current x resistance
Total resistance in a series circuit is the sum of individual resistances: Total resistance = Resistance1 + Resistance2
Power using potential difference denoted by: Power = current x potential difference
Alternative power formula involving resistance: Power = resistance x (current)²
Energy transferred relates to power and time: Energy transferred = power x time
Energy transferred can also be calculated with charge flow: Energy transferred = charge flow x resistance

Weight calculation given by: Weight = mass x gravitational field strength
Work done determined through the formula: Work done = force x distance
Force related to spring properties: Force = spring constant x extension
Moment of a force equation: Moment of a force = force x distance
General moment defined by: Moment = mass x volume
Resultant force calculated as: Resultant force = mass x acceleration
Pressure calculated by the formula: Pressure = force normal to a surface / area of the surface
Acceleration defined through change in velocity over time: Acceleration = (final velocity - initial velocity) / time taken
Pressure in gases follows the relationship: Constant = pressure x volume