1. The problem statement, all variables and given/known data A hot-air balloon is rising upward with a constant speed of 2.20 m/s. When the balloon is 3.30 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground? 2. Relevant equations 3. The attempt at a solution I just started taking Physics 1111 at college and never having taken physics in high school, I have no idea where to start. I assume you would use the knowledge that an object falls towards earth at 9.8 m/s^2... I just don't even know what equation of kinematics to plug this information into? Thank you for your help!!