1.   A triathlete relies on the space-age polymers in her triathlon bike to reduce the aerodynamic drag on her body.

2.   The goal is to allow just enough fright wig on the ball so that the racket face can grab it, but not enough to create aerodynamic drag.

3.   The problem, he said, was that the car had too much aerodynamic drag.

4.   With the added aerodynamic drag of the strong wind, the Ford stays in third gear and the engine speed climbs into sports car territory.

5.   Mars Global Surveyor is gradually descending into the Martian atmosphere using its own aerodynamic drag to slow down.