We went from 5 meters per second squared to 10 meters per second squared.

从5m/(s^2) 变为 10m/(s^2)。由此我们可以得出 力与加速度为正比例关系。

Your acceleration is going to be 4.9 meters per second squared.

这个力，也就是平行於斜面的这个地心引力的分力。

And gravity accelerates something at 9.8 seconds-- 9.8 meters per second squared.

重力加速度是9.8所以我要用12 我要推。

8, which is 98 kilogram meters per second squared, which is the same thing as newtons.

也就是 98 公斤-公尺每秒平方(kg-m/s^2)，也就是98牛顿(N)所以向量的值是98牛顿，而方向则是向下。

So I have to do something at 12-- I have to push and accelerate the pie at 12.25 meters per second squared.

所以我要用12 我要推所以略大於1g来让这个饼。

These springtails go really fast, really quickly, clocking an upwards acceleration of 700 meters per second squared, in a fraction of a second.

这些跳虫非常非常快，非常快，在几分之一秒内获得了每秒 700 米的向上加速度。

I get 2.45 meters per second squared.

我得到 2. 45 米每秒平方。

1 kilograms, times two meters per second squared, which is .

1 公斤乘以 2 米每秒平方，即 。

05 kilograms times two meters per second squared, which is .

05 公斤乘以每秒 2 米平方，即 。

05 kilograms times four meters per second squared, which is .

05 公斤乘以四米每秒平方，即 。

This 9 kg mass will accelerate downward with a magnitude of 4.75 meters per second squared.

这个 9 公斤的质量将以每秒 4.75 米的速度向下加速。

That's three kilograms times 9.8 meters per second squared.

那是三公斤乘以每秒 9. 8 米的平方。

So five times 9.8 meters per second squared is how you find this force of gravity.

所以五次乘以 9.8 米每秒的平方就是你如何找到这个引力的。

8 meters per second squared and that's going to be positive because it's making the system go.

每秒 9.8 米平方，这将是积极的，因为它使系统运行。

I get one point eight four meters per seconds squared.

我得到一点八四米每平方秒。

Plugging in everything we know, we find that your acceleration, a, was 5 meters per second squared.

使用我们所知道的一切，我们可以找出加速度 也就是说，它是每平方秒 5 米。

So negative 2.45 meters per second squared is gonna equal the net force on the five kilogram mass.

所以每平方秒负 2.45 米等于 5 千克质量上的净力。

And since acceleration is measured as the change in meters per second, its units are meters per second per second -- otherwise known as meters per second, squared.

由于加速度是以米每秒的变化来衡量的，所以它的单位是米每秒——也就是米每秒的平方。