In this case, we know your initial velocity, v-nought, was 0, and your time, t, was 7 seconds.

在这种情况下，我们知道初始速度， v (。) 为 (0)，时间 t 为 7 秒。

So, the area between the acceleration graph and the horizontal axis is just (a) times (t).

所以，加速度图之间的区域 横轴是 (a) 乘以 (t)。

And we're looking for time, t.

我们正在寻找时间，t。

Now all we have to do is solve for time, t, and we learn that the ball took 0.452 seconds to hit the ground.

现在我们要做的就是找到时间t， 我们知道球需要 0。452 秒才能到达。

I was busy answering her questions, and each answer of mine triggered more questions from her, so I barely even have time t o really enjoy the movie myself.

我忙着回答她的问题，而我的每一个回答都会引发她更多的问题，所以我几乎没有时间自己真正欣赏这部电影。

But current is just equal to the number of charged particles passing a given point over a certain amount of time – which we'll call N – times their charge, q, divided by that time, t.

但是电流正好等于在一定时间内通过给定点的带电粒子的数量——我们称之为 N——乘以它们的电荷，q，除以那个时间，t。