Laptops can become projectiles in an emergency.

发生紧急情况时笔记本电脑会变成乱飞的抛射物。

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？

Also, prune your trees and gather up any loose items that can become projectiles once the winds pick up.

此外，修剪树木任何松散的物品，一旦风力增强，这些物品可会变成抛射物。

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年的啸再次表，啸发生时，港地区是极其危险的地方，它会把船只变成巨大的抛射物。

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

哦，且， y 方向路径最顶端的抛射物的速度为零！

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.

检察官现表示，他们认为他的死亡很可是由警方的抛射物造成的，验尸结果显示他的胸部有痕迹。

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， 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。

If a model can observe a ball flying through the air, it might more easily work out the mathematical equation that describes the projectile's motion.

如果模型可以观察到空中飞行的球，它可会更容易地推导出描述抛射物运动的数学方程。

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.

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

All I know is, that at each fresh impulse we were hurled forward with a greatly increased force, and we seemed as if we were mere projectiles.

我所知道的是， 每一次新的冲动， 我们都会被以大大增加的力量向前抛掷，而我们似乎只是抛射物。