initial velocity

简明释义

初速

英英释义

例句

1.To calculate the distance traveled, you need to know the initial velocity (初始速度) and acceleration.

要计算行驶的距离，你需要知道初始速度和加速度。

2.In physics experiments, measuring the initial velocity (初始速度) of a projectile is crucial.

在物理实验中，测量抛射物的初始速度是至关重要的。

3.The car's initial velocity (初始速度) was recorded at the start of the race.

比赛开始时，汽车的初始速度被记录下来。

4.The rocket achieved a high initial velocity (初始速度) to escape Earth's gravity.

火箭达到了一个高的初始速度以逃离地球的引力。

5.The physics teacher explained how initial velocity (初始速度) affects the trajectory of a ball.

物理老师解释了初始速度如何影响球的轨迹。

作文

In the study of physics, the concept of motion is fundamental. One of the key components in understanding motion is the term initial velocity. The initial velocity refers to the speed and direction of an object at the beginning of a time interval. For instance, when a car starts from a complete stop and begins to accelerate, its initial velocity is zero. Understanding this concept is crucial for analyzing various physical situations, such as projectile motion, where an object is thrown into the air and then influenced by gravity.To illustrate the importance of initial velocity, let us consider the example of a basketball being shot towards a hoop. When the player releases the ball, it has a specific initial velocity that determines how high and how far the ball will travel before it reaches its peak and begins to fall back down. The angle of release and the force applied by the player's hand contribute to the initial velocity, which can be calculated using the formula: v = u + at,where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. In this case, if we know the initial velocity and the acceleration due to gravity, we can predict the trajectory of the basketball.Another example can be found in the field of sports. Consider a javelin thrower. The initial velocity of the javelin at the moment it leaves the thrower's hand is critical for achieving maximum distance. A higher initial velocity generally results in a longer throw, provided other factors such as angle and aerodynamics are optimized. Coaches and athletes often analyze the initial velocity during training sessions to improve performance and ensure that athletes achieve their best results.Moreover, in engineering and design, understanding initial velocity is essential when creating safety features for vehicles. Engineers must calculate the initial velocity of a car during a crash test to understand the forces involved and to design better crumple zones that can absorb energy and protect passengers. By accurately measuring the initial velocity, engineers can simulate real-world conditions and enhance vehicle safety.In conclusion, the term initial velocity plays a significant role in various fields, including physics, sports, and engineering. It is a critical parameter that influences the behavior of objects in motion. Whether it’s predicting the path of a basketball, optimizing a javelin throw, or ensuring vehicle safety, understanding initial velocity helps us make informed decisions and improvements in our practices. Therefore, mastering the concept of initial velocity is essential for anyone interested in the sciences or engineering disciplines. By grasping this fundamental idea, we can better appreciate the complexities of motion and the principles that govern it.

在物理学的研究中，运动的概念是基础。理解运动的一个关键组成部分是术语初始速度。初始速度指的是物体在时间间隔开始时的速度和方向。例如，当一辆车从完全静止开始加速时，它的初始速度为零。理解这个概念对于分析各种物理情况至关重要，例如抛体运动，其中一个物体被抛向空中，然后受到重力的影响。为了说明初始速度的重要性，让我们考虑一个投篮的例子。当球员释放篮球时，它具有特定的初始速度，这决定了篮球在达到最高点并开始落下之前的飞行高度和距离。释放角度和球员手部施加的力量会影响初始速度，我们可以使用以下公式进行计算：v = u + at，其中v是最终速度，u是初始速度，a是加速度，t是时间。在这种情况下，如果我们知道初始速度和重力加速度，我们可以预测篮球的轨迹。另一个例子可以在运动领域找到。考虑一名标枪投掷者。标枪在投掷者手中离开的瞬间的初始速度对于实现最大距离至关重要。通常，更高的初始速度会导致更远的投掷，前提是其他因素如角度和空气动力学得到了优化。教练和运动员常常在训练过程中分析初始速度以提高表现，确保运动员取得最佳成绩。此外，在工程和设计中，理解初始速度对于创建车辆的安全特性至关重要。工程师必须计算汽车在碰撞测试中的初始速度，以了解涉及的力量，并设计更好的变形区来吸收能量，保护乘客。通过准确测量初始速度，工程师可以模拟现实条件，增强车辆安全性。总之，术语初始速度在物理、体育和工程等多个领域扮演着重要角色。它是影响运动中物体行为的关键参数。无论是预测篮球的路径、优化标枪投掷，还是确保车辆安全，理解初始速度帮助我们做出明智的决策和改进。因此，掌握初始速度的概念对任何对科学或工程学科感兴趣的人来说都是必不可少的。通过掌握这一基本思想，我们可以更好地欣赏运动的复杂性以及支配运动的原理。