Please take doone's advice and try reading up on how objects move in a vacuum. Then take into account how the flag was made and forces acting on the flag when it was was "waving".
This nonsense about men not landing on the moon and the flag waving in a breeze has been busted so for such a long time you would think people would just let it go....facepalm.
We did, my uncle worked on the LEMS. He helped wire them and installed the optical systems. 10's of thousands of people worked on the Apollo missions. We went, we landed and we walked and road on it. The handful of idiots that think different need to get a freaking clue.
Why haven't we been back? Money and public will. Back in the 60's we had the public on our side and plenty of money. Today sadly it's the opposite. And Obama has stopped U.S. manned spaceflight after the shuttle retires. He killed the Constellation program. A very sad time for the U.S. space program.
The U.S. space program is LESS THAN 1% of the federal budget.