W stands for
work
F stands for
the applied force
d stands for
the distance over which the force was applied
P stands for
power
t stands for
time
v stands for
E stands for
energy
Et stands for
total energy of the system
Ep stands for
potential energy
Epg stands for
gravitational potential energy
m stands for
mass of the object
g stands for
the acceleration caused by gravity
h stands for
height
Eps stands for
potential energy of a spring
k stands for
spring constant
x stands for
elongation of the spring
Ek stands for
kinetic energy
Q stands for
internal or thermal energy