text: Dynamic pressure  is defined in incompressible fluid dynamics as
  where ρ is the local air density, and v is the vehicle's velocity. The dynamic pressure can be thought of as the kinetic energy density of the air with respect to the vehicle, and for incompressible flow equals the difference between total pressure and static pressure.
  This quantity appears notably in the lift and drag equations.
  For a car traveling at  at sea level (where the air density is about ,) the dynamic pressure on the front of the car is , about 0.38% of the static pressure ( at sea level).
  For an airliner cruising at  at an altitude of  (where the air density is about ), the dynamic pressure on the front of the plane is , about 41% of the static pressure ().