IN NEED HELP

i think this is easy but i still dont know how to do it

i need to do a game like this

specially the tracjectory and the physics

mousecity.com/games/physics/accurate-slapshot

my capx

dl.dropboxusercontent.com/u/62993408/accurate%20slapshot.capx

a guild source to use

scirra.com/forum/parabola-tracjectory-tracing-with-physics-box2d_topic61895_page2.html

R0J0hound lazer example

dl.dropbox.com/u/5426011/examples%208/lazer.capx

scirra.com/forum/how-do-i-create-an-angry-birds-style-game_topic49824.html

This already works fine. What's the issue?

do u see the game ,its not the same the physics are bad

and i want to do a tracjectory like this