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Subject - Physics:

Basics

MCQ - 63-10530

Question:

Which of the following describes what happens to a meteor crashing through the atmosphere travelling faster than its terminal velocity?

  1. The meteor decelerates
  2. The meteor stays at constant v
  3. The meteor accelerates
  4. The meteor stays at constant v

Correct Answer: A

Explanation:

When v > Vterm , the drag force is larger than the gravitational force meaning the net force is opposite to the motion causing deceleration until term= Vterm. (Note: The work done by the drag force is converted into heat, which usually causes meteorites to burn up in the atmosphere.)

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