Three balls with masses: m, 2m and 1/2m, respectively are thrown from the top of a building, all with the same initial speed.

Three balls with masses: m, 2m and 1/2m, respectively are thrown from the top of a building, all with the same initial speed. The first ball is thrown horizontally, the second at θ above the horizontal and the third at θ below the horizontal. Neglecting air resistance, rank the speeds of the balls as they reach the ground from the slowest to the fastest: