Helicopter Physics Series Intro - #1 Smarter Every Day 45
|
| Tweet @SmarterYouTube . I would appreciate it if you share this by clicking here: http://on.fb.me/ChopperPhysics . Trust me, there's more to Chopper Physics ... |
| Category: | Education |
| Rating: |  |
| Watched: | 521,847 times |
| Duration: | 03:54 |