What is the acceleration as a function of time?
加速度是,如何表示时间的？
It is not changing in time 0 because there is no acceleration.
速度不随时间改变而改变，因为加速度为。
What is the acceleration in the y direction at time zero?
那y方向上,0时刻的加速度是多少？
But in this next year you are going to see an acceleration of time.
但在新的一年里，你将发现时间加速了。
ACCELERATION, The rate of change in velocity with respect to time.
加速度，随时间变化的速度改变率。
The second time derivative is the constant acceleration.
它的二阶导数就是这个恒加速度。
By acceleration is meant the rate of change of velocity with time.
加速度指的是速度随时间的变化率。
By acceleration is meant the rate of change of velocity with time.
加速度指的是速度随时间的变化率。
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