↑
↓
:
Srpski
English
Português
Deutsch
Dansk
Español
Français
Ελληνικά
Italiano
Nederlands
Polski
Português
Română
pусский
Svenska
Türkçe
3-2-1 Contact
3-2-1 Contact
Motion: Getting a Grip (5x14)
:
Friction is emphasized in demonstrations with snakes, TGV trains, and ice-gliding boats.
#18079
:
: 225
: 0
PBS