per second per second造句

• Newton is the force that, when applied to an object with a mass of one kilogram, would give it an acceleration of one metre per second per second
  實際上，以推動一個一千克的物體產生1ms2加速度來復現一牛頓的標準力值并不容易。
• It is part of the success of the theory that the same value ? approximately one angstrom per second per second ? works for all these diverse appearances
  同一個數值（大約每秒每秒一埃）能夠適用于那麼多不同的情況，也算是這個理論的成功之處。
• It's difficult to find per second per second in a sentence. 用per second per second造句挺難的