I think they will both reach the same altitude at the same time because gravity is a constant and the amount of lift is a constant.Those are the only 2 things working on the balloons.
I am in a discussion with my wife about this. She believes that the time going down range is affecting the...
If you have 2 balloons made out of the same material, filled with the same type and quantity of gas, caring the exact same pay load. They are both in the same temperature and humidity air. You let them both go at the exact same time. 1 being acted on by prevailing winds that change speed and...