Moving hot air balloon experiences a 30,000 N lift force up and a 30,000 N gravitational force down, what is the resulting motion of the balloon?

The net force on the balloon is zero, so it has no acceleration. So by Newton's first law, if the balloon has some velocity in a given direction, it will continue moving in that direction at a constant speed. If it's motionless, it stays motionless.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

the right answer is 0.3 meters per second