Physics Equations and Units

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

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Front (Question)

What is the equation that links mass, gravitational field strength and weight?

Back (Answer)

weight = mass x gravitational field strength W = m x g

Front (Question)

What is the equation that links work done, force and distance?

Back (Answer)

Work done = force x distance W = F x s

Front (Question)

What is the equation that links force applied to a spring, spring constant and the extension?

Back (Answer)

Force applied to a spring = spring constant x extension F = k x e

Front (Question)

What is the equation that links distance, speed and time

Back (Answer)

distance = velocity x time s = v x t

Front (Question)

What is the equation that links acceleration, chance in velocity and time taken?

Back (Answer)

acceleration = chance in velocity / time a = (v-u)÷t

Front (Question)

What’s the equation that links resultant force, mass and acceleration?

Back (Answer)

resultant force = mass x acceleration F = m x a

Front (Question)

What’s the equation that links momentum, mass and velocity? (Higher only)

Back (Answer)

momentum = mass x velocity p = m x v

Front (Question)

What is the equation that links kinetic energy, mass and velocity?

Back (Answer)

kinetic energy = 0.5 x mass x (velocity)2 Ek=0.5 x m x v2

Front (Question)

What is the equation that links gravitational potential energy, mass, gravitational field strength and height?

Back (Answer)

gravitational potential energy = mass x gravitational field strength x height Ep = m x g x h

#10

Front (Question)

What is the equation that links power, energy transferred and time?

Back (Answer)

power = energy transferred / time P = E ÷ t

#11

Front (Question)

What is the equation that links power, work done and time?

Back (Answer)

power = work done / time P = W ÷ t

#12

Front (Question)

What is the equation that links efficiency, useful energy transfer and total input energy transfer?

Back (Answer)

Efficiency = useful output energy ÷ total energy input

#13

Front (Question)

What is the equation that links efficiency, useful power output and total power input?

Back (Answer)

efficiency = total power output ÷ total power input

#14

Front (Question)

What is the equation that links wave speed, frequency and wavelength?

Back (Answer)

wave speed = frequency x wavelength v = f x λ

#15

Front (Question)

What is the equation that links charge flow, current and time?

Back (Answer)

charge flow = current x time Q = I x t

#16

Front (Question)

What is the equation that links potential difference, current and resistance?

Back (Answer)

potential difference = current x resistance V = I x R

#17

Front (Question)

What is the equation that links power, potential difference and current?

Back (Answer)

Power = potential difference x current P = V x I

#18

Front (Question)

What is the equation that links power, current and resistance?

Back (Answer)

Power = (current)2 x resistance P = I2 x R

#19

Front (Question)

What is the equation that links energy transferred, power and time?

Back (Answer)

energy transferred = power x time E = P x t

#20

Front (Question)

What is the equation that links energy transferred, charge flow and potential difference?

Back (Answer)

energy transferred = charge flow x potential difference E = Q x V

#21

Front (Question)

What is the equation that links density, mass and volume?

Back (Answer)

density = mass ÷ volume (p = m ÷ v)

#22

Front (Question)

What is the unit of weight?

Back (Answer)

Newtons (N)

#23

Front (Question)

What is the unit of mass?

Back (Answer)

kilograms (kg)

#24

Front (Question)

What is the unit of gravitational field strength?

Back (Answer)

Newtons per kilogram (N/kg)