Hammer Vs. Feather: Who will win?

As we discussed in class, without an atmosphere, all objects should fall at the same rate.

Check out this NASA August, 1971 Apollo 15 video where astronaut David Scott tested this out on the moon. You can also view in on YouTube or here in black & white.

YouTube also has a NASA "Brain Bites" video that explains it in detail. (You can check out the NASA Brain Bites site for more)
Now take a look at this video. Not from a space mission or the shuttle. No special effects. You can even do this.

Can you explain it?

Newton's First Law demonstrated on an Air Track

Two big concepts - Inertia and Newton's First Law.

Here's a summary of an N1 (Newton's First Law) Lab using the Air Tracks we've just unboxed.