(飞机)俯冲通常以远大于自由落体的加速度下滑。
To descend nose down at an acceleration usually exceeding that of free fall.
广工的两男生做了自由落体，河源的一个也同演一出戏，今天东莞的一女生也想不开来了个自由落体兼死亡加速度！
Canton workers two boys have done a free fall, Heyuan is also the same in a speech a drama, Dongguan, one of today's girls were also a spur to the acceleration of free fall and die!
平均速度——时间图表可以给出这个自由落体的重力加速度。
A graph of average speeds versus time can give the acceleration due to gravity of the falling object.
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