Chapter 8.2, Problem 8.3QQ

Three identical balls are thrown from the top of a building, all with the same initial speed. As shown in Figure 8.3, the first is thrown horizontally, the second at some angle above the horizontal, and the third at some angle below the horizontal. Neglecting air resistance, rank the speeds of the balls at the instant each hits the ground.

Figure 8.3 (Quick Quiz 8.3) Three identical balls are thrown with the same initial speed from the top of a building.