Units and Equations Reference

Force

• Newtons (N)
• Pounds-force (lbf)

Mass

• Pounds-mass (lbm)
• Kilograms (kg)

Time

• Seconds (s)
• Minutes (min)
• Hours (h)

Distance

• Meters (m)

Velocity:

$v = \frac{m}{s}$

Acceleration:

$a = \frac{m}{s^2}$

Energy

• Joules (J)
• Calories (cal)

Power:

$P = \frac{J}{s} = V \cdot A$

Pressure

• Pascals (Pa)
• Pounds per square inch (psi)
• Bar
• Millimeters of mercury (mmHg)

Torque

\(\tau = N \cdot m\) or in Imperial units:
\(\tau = ft \cdot lbf\)