If i had sex and used a condom is it possible for it to rip apart during sex?

If i had sex and used a condom is it possible for it to rip apart during sex?
I suppose it's possible. If you use a condom that you've stored properly (at room temperature, NOT in someone's wallet or car, in a place where it won't get rubbed too much), use the right size condom, and put it on correctly, I'd say it's highly unlikely for it to "split" apart.
where 2 of them
It's rather unlikely, I've found. Unless there was a flaw, the condom is thin, or it was not taken care of properly, condoms are rather durable beasts.
Do not EVER use more than one at one time. The friction will cause them to break easily.
It is highly unlikely to rip if it has been stored correctly and put on correctly. Do NOT listen to the person above and put on 2. That's a sure way of ripping both.