Here the velocity is increasing so the acceleration must 0 be larger than zero here.

在这里速度在增加，所以加速度，肯定大于。

youdao

However, if you take the average acceleration t1 0 that is smaller than zero 0 because here the velocity is zero but here the velocity is negative.

可是如果考虑到,和t5之间的平均加速度5，between，t1，and，t5,那么它将小于,因为这里速度为,但是到了这里却是负值。

youdao

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

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