A feather, a golf ball, and a bowling ball, are placed in a vacuum near the surface of the Earth. All items are released from rest at the same time and from the same height. Compare the time necessary for each item to fall.

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In vacuum, all objects accelerate downward at 9.81 m/s^2 after release, and take the same time to fall the same distance.

If they're released together, they land together. It doesn't matter if one is a feather and the other is a school bus.

A feather, a golf ball, and a bowling ball are placed in a vacuum near the surface of the Earth. All items are released from rest at the same time and from the same height. The time necessary for each item to fall to the ground at exactly the same time.

What is a vacuum?

  • An object that falls through a vacuum is subjected to only one external force, the gravitational force, extract as the weight of the object.
  • An object that is moving only because of the action of gravity is said to be a free-falling object and its motion is described by Newton's second law of motion.
  • The acceleration is the same and equal to the gravitational acceleration g which is 9.8 meters/square second at sea level on the Earth.
  • The weight, size, and shape of the object are not a part of describing a free fall.
  • In a vacuum, a beach ball falls with equal acceleration as an airliner.

To learn more about vacuum refer to:

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