Gravity

[ShaghaiDoc]

Who was the first person to discover that a feather will fall as fast as a solid object, in vacuum?

[puss_boots]

This cannot be true.

[R1Geezer]

well it was predicted by Galileo. He did experiments by doppin balls of different material off the tower at Pisa. it was actually verified by David Scott on the moon:
https://www.youtube.com/watch?v=5C5_dOEyAfk

[Mortartube]

Why can't it be true Puss_Boots. It is only air resistance that slows a feathers descent.

[dundurn]

I don't know who may have first proposed the question but the specific experiment was conducted on the Moon in 1971, on the flight of Apollo 15. Astronaut David Scott dropped a falcon feather and a hammer and they hit the moon at the same time.
http://en.wikipedia.org/wiki/Apollo_15

[dundurn]

Sorry, folks - this camee up as having had no replies but I see R1Geezer gave you the same answer 2 days ago!