Distance travelled
Average speed x time
Acceleration
Change in velocity/ time taken
A=(v-u)/t
Force
Mass x acceleration
F = m x a
Weight
Mass x gravitational field strength
W = m x g
Efficiency
Useful energy transferred by the device/ total energy supplied to the device
Momentum
Mass x velocity
p = m x v
Wave speed
Frequency x wavelength
v = f x lamda
Wave speed
Distance/time
v = x/t
Density
Mass/volume
p = m/V
Work done
Force x distance moved in direction of force
E = F x d
Change in gravitational potential energy
Mass x gravitational field strength x change in vertical height
Change in GPE = m x g x change in h
Kinetic energy
1/2 x mass x (speed)2
KE = 1/2 x m x v2
Power
Work done/ time taken
P = E/t
Energy transferred
Charge moved x potential difference
E = Q x V
Charge
Current x time
Q = I x t
Potential difference
Current x resistance
V = I x R
Power
Energy transferred/ time taken
P = E/t
Electrical power
Current x potential difference
P = I x V
Electrical power
Current squared x resistance
P = I2 x R
Force exerted on a spring
Spring constant x extension
F = k x x
K
x10 to the power of 3
m
x10 to the power of -3
M
x10 to the power of 6
Micro M with line at bottom
x10 to the power of -6
V = d/t
Speed v = 2(pi) r/ t
Speed v = radius / period(time taken for 1 rotation)
Determining speed of galaxies
(Lambda- lambda with circle)/(lambda with circle) = (velocity)/(speed of light)
= v/c
Change in lambda = lambda - lambda with circle
V
U + at
V2
u2 + 2as
S
(V2 - u2) / 2a
V
Square root of 2KE/m