So notice that the acceleration is constant in time, is not changing but the velocity is changing.
请注意此处的加速度，是一个常数，不随时间变化而变化，不过速度是变化的。
2
When we have gravity an object is influenced by the gravitational acceleration and the gravitational acceleration is a constant.
当我们考虑到重力时，物体受重力，加速度影响，重力加速度，是一个常数。
3
I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.