how to Give a bouncing effect when button pressed

[spoonArt]

hello guys, i would to ask about how to give our Sprite bouncing effect?

here's my problem :

1. i have a button
2. i have a sprite
3. in the latest Box2D extention >>> is PhysicWorld changed to world???
cz it wont import when i'm trying to type Physicworld
how to give effect bouncing to mysprite??
i have looking a tutorial in this forum, but some make me confuse.... is the any simple explanation about this problem??

[yatuor]

applyforce to the button in update callback, use prismatic joint to set position limit