Term
Equation for average speed 

Definition
d = X x t
Distance = average speed x time



Term
Equation for acceleration 

Definition
a = (v  u)/t
acceleration = change in velocity/ time taken



Term

Definition
F = m x a
Force = mass x acceleration 


Term

Definition
W = m x g
Weight = mass x gravitational field strength 


Term

Definition
p = m x v
momentum = mass x velocity 


Term

Definition
E = F x d
work done = force x distance moved in the direction of the force 


Term
Equation for kinetic energy


Definition
KE = ^{1}/_{2} x m x v^{2}
kinetic energy = 0.5 x mass x velocity^{2} 


Term
Equation for gravitational potential energy 

Definition
GPE = m x g x h
gravitational potential energy = mass x gravitational field strength x change in vertical height 


Term

Definition
efficiency = (useful energy transferred by the devise)/(total energy supplied to the device) 


Term

Definition
v = ƒ x λ
wave speed = frequency x wavelength 


Term
Second equation for wave speed 

Definition
v = X/t
wave speed = distance / time 


Term

Definition
P = E/t
power = work done/time taken 


Term
Equation for a moment of a force 

Definition
moment of a force = force x distance normal to the direction of the force 


Term

Definition
Q = I x t
charge = current x time 


Term
Equation for energy transferred 

Definition
E = Q x V
Energy transferred = charge moved x potential difference 


Term
Equation for potential difference 

Definition
V = I x R
potential difference = current x resistance 


Term

Definition
P = E/t
power = energy transferred/time taken 


Term
Equation for electrical power 

Definition
P = I x V
electrical power = current x potential difference 


Term
Equation for electrical power (including resistance) 

Definition
P = I^{2} x R
power = current squared x resistance 


Term

Definition
ρ = m/v
density = mass/volume 


Term
Equation for force on a spring 

Definition
F = k x X
Force = spring constant x extension 


Term

Definition
P = F/A
pressure = force normal to surface/area of surface 

