So if you substitute that in there you get an average acceleration which is smaller than zero.

所以如果把它代进来，会得到一个，小于0的平均加速度。

youdao

So the signs in the velocity and the signs in average acceleration depend crucially on how I have defined my increasing value of x not where I choose my zero points.

所以速度的符号,和平均加速度的符号,这二者都取决于,这里x正方向,是如何定义的,和0点的选取没有关系。

youdao

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？

youdao

The reduced weight and additional gear ratios helps drop zero-to-60 acceleration time for the naturally aspirated V8 to 6.5 seconds, down from 7.2 seconds.

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