那平均加速度到底是多少呢？

So what, now, is the average acceleration?

youdao

所以在撞击的过程中,平均加速度,只有。

So therefore the average acceleration during the impact 5/ divided by one quarter...

youdao

所以如果把它代进来，会得到一个，小于0的平均加速度。

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

youdao

It's useful to have the average acceleration, which you can find by taking similar differences of velocities.

平均加速度也是很有用的,你可以用类似方法,取速度的变化量求出来

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