What steps will reproduce the problem?
1. 运行了代码示例
2. 发现足球落下是匀速运动，而不是自由落体运动
3. 查看代码super(0, 0.2f, false);已经将重力加速度设为0.2了
4. 请大牛指教！
What is the expected output? What do you see instead?
What version of the product are you using? On what operating system?
0.3.1
win7 eclipse
Please provide any additional information below.
Original issue reported on code.google.com by sws9...@gmail.com on 30 Jul 2011 at 9:36
Original issue reported on code.google.com by
sws9...@gmail.comon 30 Jul 2011 at 9:36