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The Physics Trick That Makes These New Super Cars So Insanely Fast
Zero to 60 in 1.4 seconds? By lowering air pressure under the car, automakers can dial the acceleration way up.
Even though there's an extra downward pushing force ( F fan), the car stays on the ground and still has a zero acceleration in the vertical direction. F1 cars today channel airflow through the body in clever ways to achieve some of the same “ground effect”—justified by saying their purpose is to cool the engine. While these airflow systems do help cool the engine, everyone knows the real purpose is to generate low pressure under the car to suction it closer to the road.
Or read this on Wired