Arkanoid game Help!

Hey, i am need of help for my school assignment (to create an arkanoid game)!

ive done all the design, but the actionscript for the ball is a *****. I entered the below script but instead of the ball bouncing off the paddle, it just sticks there.
onClipEvent (load) { movespeed = 10; }
onClipEvent (enterFrame)
{
_x += movespeed;
_y += movespeed;
}
onClipEvent (load) { movespeed = 10; }
onClipEvent (enterFrame)
{if (_parent.paddle.hitTest (this))
{
_x += -movespeed;
_y += -movespeed;

}
}

PLease HELP!!!