Calculate angle and set impulse

Hey Guys, so the first Game is finished successfully and now i wanna make a new one.

I have decided to create something like an air hockey, there are several games iOS available.

Now i stuck the collision. I dont know how to give the Puck (Ball) a permanent Speed and calculate the angle the collision between Puck and the "Racket".

I wanna create a physics like in Billiard / Snooker.

I have a feeling that Physics should do this automatically - you just have to turn down the friction of your puck, and find a way to control the racket. Make sure the collision masks are circular.

Hey thanks for the reply,

my Problem is to move the Puck automatically when I press the GameStart Button into a direction. The puck stuck at one place.

Collision works good with circle mask [thx :)] but i only found one solution to move the puck (Move Forward).

I expect that if i get a constant Speed to the puck the move Forward Problem will be solved.

You should be able to to 'apply impulse at angle' to get the puck moving in whichever direction you'd like (or a random one).