A device launches a ball straight up from the edge of a cliff so that the ball falls and hits the ground at the base of the cliff. The device is then turned so that a second, identical ball is launched straight down from the same height. Assuming the initial speed of the ball is the same in both cases, does the second ball hit the ground with a velocity that is higher than, lower than, or the same as the first ball? Explain your answer. Initially i thought the answer was that the second ball hits the ground with a higher velocity, but the answer ended up being that the velocities would be identical. I don't quite understand this concept, because it seems as though the one being launched directly down would achieve a higher velocity due to having a stronger downward acceleration. Is there anyone who could explain this concept to a physics noob like me in an easy, uncomplicated way? Thanks!