In a physics lab, a small cube slides down a frictionless incline as shown in the figure, and elastically strikes a cube at the bottom that is only…

In a physics lab, a small cube slides down a frictionless incline as shown in the figure, and elastically strikes a cube at the bottom that is only one-half its mass. if the inlicne is 30 cm hgih and the table is 90 cm off the floor, where does each cube land?