If two balls were thrown at the same time horizontally from the same height at different speeds would they land at the same time?
Yes because it would take them the same amount of time to fall from that height. Gravity would work on them both at the same rate. The difference is that the faster one will go farther. Not entirely sure on this though.
Yes and no. WHY? Because one could be more heavy than the other... HOPE I HELPED! ;-)