Aerodynamic Drag

Drag is lhe force exerted by air on any body moving
through it. When a car is mobile, it displaces air and
leaves a wake behind it. just like a boar cutting
through water. Air, after all. is a fluid. Drag has a
negative effect on performance as well as efficiency;
therefore oar designers try to keep drag 10 a
minimum. While a raindrop has the least amount of
drag. the upright design of some of Lhe BEST
commuter buses in India gives a drag coefficient of
1.30. Must modem cars have a coefficients of drag
ranging between 0.4 and a low of 0.26. The power
consumed in pushing a body through the air goes up
with the cube of the speed · se above 60kph, the
majority of the power needed to push a car along is
absorted by aerodynamic drag