Drag

This is similar to aerodynamics. Drag is how well a race car travels through the air and how much resistance it offers. NASCAR race teams work to get the lowest drag number possible for higher straightaway speeds.

The resistance a car experiences when passing through air at high speeds. A resisting force exerted on a car parallel to its air stream and opposite in direction to its motion.

Device on fishing reels that allows line to pay out under pressure, even though the reel is engaged; set correctly, it ensures against line breakage.

Resistance caused by friction in the direction opposite to that of movement (i.e., motion) of components such as wind turbine blades.