Is air at alton towers like a rollercoaster?

last year i went on 13 at alton toweres and i really didnt like it and now i hate rollercoasters. im going again in a couple of weeks and im really tempted to go on air because it looks fun. But now im scared incase it is like a roller coaster and dont know whether to go on it or not. i also want to know how fast it is. Thanks!