Can the knock back granted by open hands flurry of blows be used to push the target vertically?

Can the knock back granted by open hands flurry of blows be used to push the target vertically?

Can Clerics and Druids pray for a minute to swap spells?

Shouldn’t Genasi innate spells be tied to a mental score?

Would you allow a monk to use open hand technique to push 15 feet a 0 points of life troll that is prone?

What does it mean: “within 10 feet of you” ?