Yes, it will e released in early 2010 There will most likely be a third also
If you played Mass Effect 1 the second game imports your old game save, so it would depend on how you played Mass Effect 1 as to whether or not Kaiden is alive. If you did not play Mass Effect 1, then the game will default to the character with the opposite gender to Shepard. So Ashley will be there with a male Shepard, Kaiden for a female one. Below is a link which has the important decisions you make in 1 and their effect in the sequel.
Mass Effect 2 should have come with two discs. If you do not have the second one, something went wrong, and it would be best to return it to who/whom you received it from. If that's not possible, you're going to have to go to a store and buy the game again. It will come with the second disc.
If he died in Mass Effect 1 then he is not in Mass Effect 2. If he survived Mass Effect 1 he shows up in Mass Effect 2 but he can not be killed.
The effect of mass extinction is extinction, death of a mass
Yes, there will be a Mass effect 3. even if your Shepard died, there will be a mass effect 3.
mass effect 2 will be
BioWare, the developer of Mass Effect has confermed Mass Effect 2 to come out in 2010.
Mass Effect and Mass Effect 2 are both single player. There are no multiplayer modes
No, Mass Effect 2 has a completely different weapon system.
It doesn't. But velocity does effect mass : as velocity increases, mass increases.
No. That's a single player game.
Mass Effect 2 is a 15.