You have to be pretty incompetent to fail. I've certainly seen it happen, but that tended to be people who left it to the night before the deadline and knocked out a shoddy piece of nonsense from lecture slides in an all-nighter without doing any research of their own. Plus the old chestnut of thinking they could copy & paste from Wikipedia and nobody would notice.
Bear in mind that your first year is an apprenticeship. You're just getting to grips with what uni work is like, so you can view the first few assessed assignments as a learning experience.