On the surface of the Earth, a hammer and a feather are dropped from the same height at precisely the same moment. The feather impacts the Earth first because the force of gravity is weaker on the lighter feather. The hammer and feather both impact the ground at the same time. The hammer impacts the ground first because it is heavier than the feather. The feather hits the ground after the hammer because of air resistance.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 9OQ: A student throws a heavy red ball horizontally from a balcony of a tall building with an initial...
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On the surface of the Earth, a hammer and a feather are dropped from the same height at precisely the same moment. The feather impacts the Earth first because the force of gravity is weaker on the lighter feather. The hammer and feather both impact the ground at the same time. The hammer impacts the ground first because it is heavier than the feather. The feather hits the ground after the hammer because of air resistance.
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