Q107
General SciencePhysics
Two cars, passing each other at high speed, are in danger of side swiping because
- a.of the increasing air pressure in the space between them
- b.of decrease in the velocity of air molecules between them
- c.of decrease in air pressure in the space between them
- d.of the increase in the velocity of air molecules between them
Answer: (C) of decrease in air pressure in the space between them
By Bernoulli's principle, air moving faster through the narrow gap between the two cars has lower pressure than the relatively still air on their outer sides. This pressure difference creates a net inward force that can pull the vehicles toward each other, risking a side-swipe collision.