Learn more physics!
If you drop a bowling ball and a golf ball from a one hundred foot building at the same time,which one will land first and why?
A famous scientist named Galileo did this type of experiment in the
late 1500's. This may seam amazing, but they would both hit the ground
at the same time.
The reason this works is because all objects fall at the same rate.
Now, I know you're thinking, "But what about a feather? That falls
slower than a ball." You'd be right about that. The reason a feather
falls slowly is because the air pushes on it more than it would on a
ball. But if you could remove all the air, then everything would fall
at the same speed.
When the astronauts went to the moon, they actually tried this. The
moon doesn't have any air, so it worked perfectly. The different
objects all fell at the same speed.
(published on 10/22/2007)
Follow-up on this answer.