The tsunami of 2011 once again showed that harbor areas are extremely dangerous places to be during a tsunami, which transforms ships into giant projectiles.

2011年的海啸再次表明，在海啸发生时，海港地区是极其危险的地方，它会把成巨大的抛射物。

Laptops can become projectiles in an emergency.

在发生紧急情况时笔记本电脑会成乱飞的抛射物。

Prosecutors now say they consider it " probable" that his death was caused by a police projectile after a post mortem showed marks on his chest.

检察官现在表示，他们认为他的死亡很可能是由警方的抛射物造成的，验尸结果显示他的胸有痕迹。

And what about the quintessential act of God, the projectile hurled by Zeus himself?

上帝的典型作为，宙斯亲自投掷的抛射物又如何呢？

So if that tennis ball is a projectile and we are studying projectile motion, the internal structure of the tennis ball is not relevant to the question we are trying to solve.

所以如果那个网球被视作一个抛射物， 而我们正在研究抛射运动，那么网球的内结构对于我们试的问题是不相关的。

2 minutes and 45 seconds after DART's impact, LICIACube flew past Dimorphos to photograph the  impact site with its evolving plumes and ejecta.

在美国国家航空航天局的双小行星重定向测试任务撞击后2分45秒，利西亚立方卫星飞越迪莫福斯， 拍摄了撞击地点及其不断扩散的羽状物和抛射物。

In other words, in the y-direction,   the acceleration of the projectile is constant and we can use the Uniformly Accelerated Motion  equations.

换句话说，在 y 方向上，抛射物的加速度是恒定的，我们可以使用匀加速运动方程。

We also 3D printed a projectile that was a little more aerodynamic and we were amazed to see it travel 130 yards.

我们还用3D打印技术制作了一个更具空气动力学性能的抛射物，看到它能飞行130码，我们感到非常惊讶。

Oh,   and the velocity of a projectile at the very top of its path in the y-direction is zero!

哦，并且，在 y 方向路径最顶端的抛射物的速度为零！

In the y-direction the projectile is in free fall because the only force acting on the projectile  in the y-direction is the force of gravity.

在 y 方向上，抛射物处于自由落体状态，因为作用在 y 方向上抛射物上的唯一力是重力。