From the archives: dropping a hammer and a feather on the moon

Wednesday, October 26, 2011

You know how the say "in space, no one can hear you scream a hammer weighs as much as a feather?" Here's an Apollo 15 astronaut demonstrating this theory on the moon.

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1 comentarii:

Anonymous said...

Common! Thats basic physics! The velocity of the feather or hammer is NOT weight dependent!

m*g*h = 1/2*m*v^2
g*h = 1/2*v^2
v = sqrt(2gh)

The reason why a feather falls down at lower speed on earth is because of the aerodynamic resistance. But there is no atmosphere on the moon. Same old school experiment: Compare the velocity of a penny and a feather in vacuum.

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