Equations Flashcards
State the equation that links speed, distance and time
Speed = distance / time
(s=d/t)
State the equation that links acceleration, velocity and time
Acceleration = change in velocity/time
(A = v-u / t)
State the equation that links speed, frequency and wavelength (of a wave)
Wave speed = frequency x wavelength
(V = f x wl)
State the equation that links frequency and time
Frequency = 1 / time period
(F=1/t)
State the equation that links density, mass and volume
Density = mass / volume
(P = m/v)
Rearrange the equation that links speed, distance and time
S = D/T
D =
T =
Equation for power, current and voltage
(Rearrange)
Power = current x voltage (P = I x V)
I = P/V
V = P/I
Equation for energy transferred, current, voltage and time
(Rearrange)
Energy transferred = current x voltage x time (E = I x V x T)
I = E/V x T
V = E/I x T
T = E/I x V
Equation for voltage, current and time
(Rearrange)
V = I x R
I = V/R
R = V/I
Equation for energy transferred , charge and voltage
(Rearrange)
E = Q x V
Q = E/V
V = E/Q
Equation for G.P.E, mass, gravitational field strength, height
G = 10 (for earth)
G.P.E = m x g x h
Equation for kinetic energy, Mass and speed
Kinetic energy = 1/2 x mass x speed (squared)
Equation for power, work done(energy transferred ) and time
Energy transferred = power x time
Current (time and charge)
Q = IT
‘If you’re trying to find the current, you should never QIT’
Refractive index of a material (n)
N = sin (i) / sin (r)
