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Equivalence principle

physical science Maturity 13-18

Things fall at the same speed.

Apollo 15 feather and hammer drop.ogv
Apollo 15 feather and hammer drop.ogv
A heavy hammer falls fast. A light feather falls fast too. They land at the same time. This helps us learn about space. Can you drop two things to see?
Elevator gravity.svg
Elevator gravity.svg

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File:Elevator gravity.svg
Elevator gravity.svg
Apollo 15 feather and hammer drop.ogv
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Galilean invariance
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📚 Content adapted from Wikipedia | Readability: FK 14.9 | Vital Level 4