[单选题]
00.29: The following question refer to the followingz-w(x5r qoo 7g information. 6v*f bgnx7g6m An ideal elasti7gxvm6b6gn* fc rubber ball is dropped from a height of about 2 meters, hits the floor and rebounds to its original height.
Which of the following would best represent acceleration versus time for the bouncing ball?