Cassandra, Rothgar: You both back up and prepare to make the jump.
Jump Checks, DC 10
Cassandra, takes 10, +6 modifiers, total 16, success
Rothgar, roll of 18 on d20, +2 Str, -6 armor, total 14, success (mostly)
Cassandra: You clear the trapdoors gracefully.
Rothgar: Your jump is gorgeous—technically perfect, really, and quite graceful. Your landing, however, leaves a lot to be desired. After the dust clears, you're lying on the floor, face down.
OOC: Because Rothgar didn't beat the DC by 5 or more, his landing ended up being more of a crash. See PHB 77 for more information.