To understand this result, note that in order for the ball to bounce from one wall and strike the other at the same height, the initial velocity must be vx051/2gDt. For the ball to collide with the wall and travel back along the same path,
To understand this result, note that in order for the ball tobounce from one wall and strike the other at the same height,the initial velocity must be vx051/2gDt. For the ball tocollide with the wall and travel back along the same path,