# Example 12.1
p = 3.0e6 Pa; psi; lb/ft^2


# Example 12.2
m0 = 1 kg
c = CLight()
e = m0 * c^2
FPS
e
(1 kg) * (1 m/s)^2
20 kg m^2 / s^2; FPS; slug ft^2 /s^2


# Example 12.3
MKS(N)
m0 = 180 kg
gmars = 3.68 m/s^2
rmars = 3390 km
r0 = 3522 km
w_earth = grav() * m0
w_mars = gmars * m0
w_reenter = m0 * gmars * (rmars / r0)^2


# Homework Problems:

TBD