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1 mark

Two cars, passing each other at high speed, are in danger of sideswiping because

  1. A
    of the increasing in air pressure in the space between them.
  2. B
    of decrease in the velocity of air molecules between them.
  3. C
    of decrease in air pressure in the space between them.
  4. D
    of the increase in the velocity of air molecules between them

Solution & Step-by-step Explanation

According to Bernoulli's principle, an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure. When two cars pass each other at high speed, air moves rapidly through the narrow gap between them. This high-velocity airflow causes a sudden drop in air pressure in the space between them, and the higher external atmospheric pressure pushes the cars toward each other, creating a sideswipe risk.

Practice this question

Try it yourself before checking the explanation above.

Two cars, passing each other at high speed, are in danger of sideswiping because
A
of the increasing in 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

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Fluid MechanicsBernoulli's Principle

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