velocity

简明释义

英[vəˈlɒsəti]美[vəˈlɑːsəti]

n. 速度，速率；高速，快速；（经济）周转率，流通速度

复 数 v e l o c i t i e s

英英释义

单词用法

同义词

反义词

例句

1.Escape velocity is simply the speed of an object that's shot out of a cannon the minimum initial speed so that the object could later escape Earth's gravity on its own.

逃逸速度就是一个物体的速度，比如说，从加农炮中射出的最小初始速度，这样这个物体以后就可以自己脱离地球的引力。

2.The temperature field and velocity field inside springhouse was numerically simulated.

对冷藏室内的温度场和速度场进行了数值模拟。

3.OK, so that's the velocity vector.

好，这就是速度矢量。

4.It has a certain velocity.

它有一个速度。

5.Jaguars can move with an astonishing velocity.

美洲豹跑起来速度惊人。

6.What is the velocity of this particle?

那么粒子的速度又是多少？

7.In physics, velocity is defined as the speed of an object in a given direction.

在物理学中，速度被定义为物体在特定方向上的速度。

8.The car reached a maximum velocity of 120 miles per hour on the highway.

这辆车在高速公路上的最高速度达到了每小时120英里。

9.To calculate the velocity, you need to know the distance and the time taken.

要计算速度，你需要知道距离和所用时间。

10.The rocket achieved a significant velocity after launch.

火箭发射后达到了显著的速度。

11.The velocity of the wind can greatly affect weather patterns.

风的速度会极大地影响天气模式。

作文

Understanding the concept of velocity is crucial in both physics and everyday life. In its simplest form, velocity refers to the speed of something in a given direction. Unlike speed, which is a scalar quantity that only considers how fast an object is moving, velocity is a vector quantity, meaning it has both magnitude and direction. This distinction is important because it helps us understand not just how quickly an object is traveling, but also where it is headed.In physics, velocity can be calculated using the formula: velocity = displacement/time. Displacement refers to the change in position of an object, taking into account the direction of movement. For instance, if a car travels 100 kilometers north in 2 hours, its velocity would be 50 kilometers per hour north. This example illustrates the significance of direction in determining velocity. If the same car traveled 100 kilometers south in the same amount of time, its velocity would be 50 kilometers per hour south, demonstrating that velocity can yield different results based on the direction of travel.In our daily lives, we often encounter the concept of velocity without realizing it. For example, when planning a road trip, we might consider the velocity of our vehicle to estimate arrival times. If we know the distance to our destination and our average speed, we can calculate how long it will take to get there. However, if we only consider speed without accounting for direction or potential obstacles, our estimates may be inaccurate. Therefore, understanding velocity allows us to make better-informed decisions and improve our time management.Moreover, velocity plays a significant role in various fields such as engineering, meteorology, and even sports. Engineers must consider the velocity of vehicles when designing roads and bridges to ensure safety and efficiency. Meteorologists analyze wind velocity to predict weather patterns and inform the public about potential storms. In sports, athletes strive to optimize their velocity, whether it’s a sprinter aiming for maximum speed on the track or a soccer player calculating the best angle to kick a ball for optimal velocity towards the goal.In conclusion, the term velocity encompasses more than just speed; it embodies a fundamental principle that governs motion in our world. Whether in scientific contexts or everyday scenarios, understanding velocity helps us navigate our environment more effectively. By recognizing the importance of both speed and direction, we can apply this knowledge in various aspects of life, from practical decision-making to advanced scientific research. As we continue to explore the intricacies of motion, the concept of velocity remains a vital component of our understanding, allowing us to appreciate the dynamic nature of the universe around us.

理解速度这一概念在物理学和日常生活中都是至关重要的。简单来说，速度指的是某物在特定方向上的速度。与仅考虑物体移动速度的标量量（速度）不同，速度是一个矢量量，这意味着它具有大小和方向。这一区别很重要，因为它帮助我们理解不仅物体移动得有多快，还能知道它的行进方向。在物理学中，速度可以通过公式计算：速度 = 位移/时间。位移指的是物体位置的变化，同时考虑了运动的方向。例如，如果一辆车在2小时内向北行驶100公里，它的速度将是每小时50公里北。这一例子说明了在确定速度时方向的重要性。如果同样的车在相同的时间内向南行驶100公里，它的速度将是每小时50公里南，这表明根据行驶方向，速度可能会产生不同的结果。在我们的日常生活中，我们经常在不知不觉中遇到速度的概念。例如，在计划公路旅行时，我们可能会考虑车辆的速度来估算到达时间。如果我们知道目的地的距离和平均速度，我们可以计算到达那里需要多长时间。然而，如果我们只考虑速度而不考虑方向或潜在障碍，我们的估算可能会不准确。因此，理解速度使我们能够做出更明智的决策，并改善我们的时间管理。此外，速度在工程、气象甚至体育等多个领域中都发挥着重要作用。工程师在设计道路和桥梁时必须考虑车辆的速度以确保安全和效率。气象学家分析风的速度以预测天气模式并通知公众潜在的风暴。在体育中，运动员努力优化他们的速度，无论是短跑运动员在跑道上追求最大速度，还是足球运动员计算最佳角度以便以最佳的速度射门。总之，速度这个术语不仅仅包含速度；它体现了支配我们世界运动的基本原则。无论是在科学背景还是日常场景中，理解速度帮助我们更有效地导航环境。通过认识到速度和方向的重要性，我们可以在生活的各个方面应用这些知识，从实际决策到高级科学研究。随着我们继续探索运动的复杂性，速度的概念仍然是我们理解的一个重要组成部分，使我们能够欣赏周围宇宙的动态特性。