elastic-perfectly plastic???

elastic-perfectly plastic?
perfectly elastic plastic
完全 彈性 塑膠

有咩properties?
K.E. conservered 能量守恆
有咩assumption?
assumption: no energy loss 沒有能量散失(包括聲音,熱能)

e.g. 桌球的球 是~接近完全 彈性 物料
e.g. Stop Shot
ie. 被撞的球與白球速度一樣

應用e.g.
elastic and inelastic collision of two trolleys (experient)


Classifying collisions
圖片參考：http://ap.polyu.edu.hk/apahthua/College%20Physics/pic/chapter8.07.01.gif
http://ap.polyu.edu.hk/apahthua/College%20Physics/ch8_2.html

more ref.
In physics and materials science, plasticity describes the deformation of a material undergoing non-reversible changes of shape in response to applied forces.

http://en.wikipedia.org/wiki/Plasticity_(physics)

It should be in the Topic of CE Physics "Momentum"

Shouldn't that be "perfectly elastic"??