A ball is released from rest above an inclined plane and bounces elastically down the plane. As the ball progresses down the plane, the time and the distance between each collision will:

Work in the reference frame with x–axis along the plane and y–axis perpendicular to the plane. Then in the y–direction, the ball simply bounces regularly up and down, so the collisions are uniformly spaced in time. However, gravity provides an acceleration in the x–direction, so the distance increase.