Just to be clear, I am putting the maximum acceleration in for a. Also, I have made the assumption that the stopping distance (s) is small compared to the jumping height.

需要声明的是，在上述表达式中，我用a表示跳楼者的最大加速度。 此外，我还假设跳楼者完全停下所经过的距离与整个下落距离相比可以忽略不计。

youdao

Called Distronic, it also operates at high speed and adjusts both braking and acceleration to maintain a constant distance from other cars. If a collision seems likely a warning is given.

雷达控制系统同样在高车速时启动并通过自动加减车速来保持与其它车辆间的固定距离并在预见事故时发出警报。

youdao

Since quick acceleration over a short distance is the key to winning a short race, Piazza says the trade-off makes sense for sprinters.

因为能够在短距离内迅速加速是在短跑中获胜的关键，所以piazza认为这些因素的权衡对短跑选手而言是值得的。

youdao

Beginning in the 2013 season, all 19 MLS clubs will use the data-tracking technology from adidas, providing coaches, trainers and players with real-time performance metrics including heart rate, speed, acceleration, distance, field position and, for the first time, power.

ENGADGET: Adidas miCoach Elite System set to equip all MLS teams in 2013, creates world's first 'smart league'

The distance is monitored using sensors mounted at the front of the car, and braking or acceleration are applied automatically to ensure that it remains constant, thus reducing the chances of a collision.

ECONOMIST: Cars that drive themselves