How do the speeds and kinetic energies of the balls compare as they strike the ground, assuming the balls weigh exactly 4 kg each?

11. Four identical balls are thrown from the top of a cliff, each with the same speed. The first is thrown straight up, the second is thrown at 30° above the horizontal, the third at 30° below the horizontal, and the fourth straight down. (Assume friction and air resistance is zero)How do the speeds and kinetic energies of the balls compare as they strike the ground, assuming the balls weigh exactly 4 kg each?