UC知道物理方面的英语翻译
来源：百度知道 编辑：UC知道 时间：2024/06/30 09:37:14
What is the acceleration of a rock at the top of its trajectory when thrown straight upward? Explain whether or not the answer is zero by using the equation a=f/m as a guide to your thinking.
A rocket fired from its launching pad not only picks up speed, but its acceleration also increases significantly as firing continues. Why is this so?( hint: about 90% of the mass of a newly launched rocket is fuel)
When blocking in football, why does a defending lineman often attempt to get his body under that of his opponent and push upward? What effect does this have no the friction force between the opposing lineman’s feet and the ground?
A horizontal force of 100N is required to push a crate across a factory floor at a constant speed. What is the net force acting on the crate? What is the force of friction acting on the crate.
Why is easier to wa
If an object has no acceleration, can you conclude that no forces are exerted on it? Explain
如果一个物体本身没有加速度，你就能认为它身上没有接受到外力吗？解释一下。
What is the acceleration of a rock at the top of its trajectory when thrown straight upward? Explain whether or not the answer is zero by using the equation a=f/m as a guide to your thinking.
一枚石子被笔直的扔到空中，但它到达弹道顶端时它的加速度是多少？用公式 a=f/m 来好好思考一下是否答案是零。
A rocket fired from its launching pad not only picks up speed, but its acceleration also increases significantly as firing continues. Why is this so?( hint: about 90% of the mass of a newly launched rocket is fuel)
当一枚火箭发射时，它的速度不光增加，而它的加速度也在明显增加。为什么呢？（火箭在发射时其重量的90%都是燃料）
When blocking in football, why does a defending lineman often attempt to get his body under that of his opponent and push upward? What effect does this have no the friction force between the opposing lineman’s feet and the ground?
在橄榄球的防守中，为什么一个边线防守队员试图使自己的身体抵在对方的身体下并向前推？这对这名边线防守队员的脚与地面之间的摩擦力产