I am pretty sure it's called flexibility.
Go to this website: http://en.wikipedia.org/wiki/Flexibility_(anatomy)
Flexibility is being able to move your arms and legs without pain or tightness.
Flexiblity
ball-and-socket joint
ball and socket joint
It should move freely and smoothly, but without any play.
Zero resistance would be a perfect conductor where the electrons move freely without any losses.
Gases move freely because there are more spaces between particles of gases.So they can move easily.
When someone moves freely without any particular direction or purpose, it is often referred to as meandering or navigating aimlessly. This type of movement may involve wandering, roaming, or simply strolling without a specific destination.
A gas is something without a fixed shape or volume because its particles are widely spread out and move freely.
Stick puppets are similar to regular puppets but instead of inserting a hand in its opening you place a stick inside it. The arms and legs of stick puppets move about freely.
yes jellyfish are nektons because it move freely any thing that move freely in the ocean is a nekton.
Well, that depends on what state of matter they are in. a solid can move, but cannot move freely as it is bound to one spot by the gravitational forces. water would be able to move freely in a confined space. and gas can move freely as long as there is nothing blocking its path.