A feather, initially at rest, is released in a vacuum 12 m above the surface of the earth. Which of the following statements is correct?
Correct answer: B. The acceleration of the feather remains constant during the fall
- A. The maximum velocity of the feather is 9.8 m/s
- B. The acceleration of the feather remains constant during the fall
- C. The acceleration of the feather increases during the fall
- D. The acceleration of the feather decreases until terminal velocity is reached
Explanation
In vacuum there is no air resistance, so the feather falls with constant acceleration equal to g throughout the fall; terminal velocity effects do not apply in vacuum.
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