It seems like you're looking for a quick review or confirmation of answers related to gravitational data and free fall behavior. Here's a brief overview and clarification based on the information you provided:
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Why does a sheet of paper fall slower than a heavier object?
- Answer: A sheet of paper has a larger surface area relative to its mass, leading to greater air resistance compared to its weight. This is why it falls more slowly.
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Do weight differences affect fall time in a vacuum?
- Answer: No, in a vacuum, all objects fall at the same rate regardless of their weight because there is no air resistance acting on them. However, in the presence of air, heavier objects may fall faster than lighter objects due to air resistance.
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Typical time for free-fall from a certain height?
- Answer: If you're stating "4.0 seconds," this would depend on the height from which the objects are dropped. For example, an object dropped from a certain height in a gravitational field would reach the ground in approximately this time under ideal conditions.
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Will two objects fall at the same time?
- Answer: Yes, if no air resistance is present (like in a vacuum), two objects will hit the ground simultaneously regardless of their mass, as gravity accelerates all objects equally.
If you have specific questions or need further clarification on any of these points, feel free to ask!