Units
kg
units of mass
X
Joules
units of energy
U (any subscript)
potential energy
Ug
potential energy of gravity on earth
meters
units of displacement or distance
V
velocity
N*m
Units of work
K (capital K)
kinetic energy
UG
gravitational potential in space
m/s^2
acceleration
fancy T
torque
watts
Units of power
omega ("w")
angular velocity
Us
spring potential energy
N
units of force
k (small k)
spring constant
(kg)(m/s^2)
units of force
I (letter I)
rotational inertia
aC
centripetal acceleration
kg*(m/s)
units of momentum
G
gravitational constant
N*s
units of momentum
L
angular momentum
Ts
time period of a spring