starting velocity

简明释义

起动速度

英英释义

例句

1.To calculate the trajectory, we need to know the starting velocity 起始速度 of the projectile.

要计算轨迹，我们需要知道抛射物的起始速度。

2.Engineers must consider the starting velocity 起始速度 when designing roller coasters for safety.

工程师在设计过山车时必须考虑起始速度以确保安全。

3.In a car race, the starting velocity 起始速度 of each vehicle is crucial for determining their chances of winning.

在汽车比赛中，每辆车的起始速度对决定它们获胜的机会至关重要。

4.The rocket's starting velocity 起始速度 must exceed 7 km/s to escape Earth's gravity.

火箭的起始速度必须超过7公里/秒才能逃脱地球引力。

5.The athlete's starting velocity 起始速度 during the sprint can greatly affect their overall performance.

运动员在短跑中的起始速度可以极大影响他们的整体表现。

作文

Understanding the concept of starting velocity is essential in various fields, particularly in physics and engineering. The term refers to the initial speed of an object at the moment it begins to move. This concept plays a crucial role in the study of motion and can significantly affect the outcomes of experiments and real-world applications.In physics, when analyzing the motion of an object, we often start by determining its starting velocity. For example, consider a car that is stationary at a traffic light. When the light turns green, the car's starting velocity is zero because it hasn't begun to move yet. However, as the driver accelerates, the car gains speed, and its starting velocity becomes relevant in calculating how quickly it can reach a certain distance.The importance of starting velocity extends beyond simple calculations; it also influences various physical principles. For instance, in projectile motion, the starting velocity of an object determines how high it will go and how far it will travel before hitting the ground. If a ball is thrown upwards with a certain starting velocity, the height it reaches can be predicted using kinematic equations, which rely heavily on this initial speed.In engineering, understanding starting velocity is critical for designing vehicles, machinery, and even amusement park rides. Engineers must calculate the starting velocity to ensure safety and efficiency. For example, when designing a roller coaster, engineers must consider the starting velocity at the top of the first hill to ensure that the ride provides enough momentum to complete the course without stalling.Moreover, starting velocity is not only limited to objects in motion but also applies to various real-life scenarios. Athletes, for instance, must consider their starting velocity when sprinting or jumping. A sprinter's performance can be significantly affected by their initial speed as they leave the starting blocks. Similarly, high jumpers need to optimize their starting velocity to achieve maximum height.In conclusion, the concept of starting velocity is fundamental in understanding motion and dynamics. Whether in physics, engineering, or sports, recognizing the significance of this initial speed can lead to better predictions, designs, and performances. By mastering the idea of starting velocity, one can gain deeper insights into the mechanics of movement and the various factors that influence it. Thus, it is vital for students and professionals alike to grasp this concept thoroughly, as it has far-reaching implications in both theoretical and practical applications.

理解起始速度的概念在各个领域都至关重要，特别是在物理学和工程学中。这个术语指的是物体开始移动时的初始速度。这个概念在运动研究中起着关键作用，并可能显著影响实验和实际应用的结果。在物理学中，当分析一个物体的运动时，我们通常从确定它的起始速度开始。例如，考虑一辆在红绿灯前静止的汽车。当灯变绿时，汽车的起始速度为零，因为它尚未开始移动。然而，随着驾驶员加速，汽车的速度增加，它的起始速度在计算它能多快到达某个距离时变得相关。起始速度的重要性不仅限于简单的计算；它还影响各种物理原理。例如，在抛体运动中，物体的起始速度决定了它将达到多高以及在落地之前会飞多远。如果一个球以一定的起始速度向上投掷，可以使用运动学方程预测它将达到的高度，这些方程在很大程度上依赖于这个初始速度。在工程学中，理解起始速度对于设计车辆、机器甚至游乐园设施至关重要。工程师必须计算起始速度以确保安全和效率。例如，在设计过山车时，工程师必须考虑第一座山顶的起始速度，以确保该游乐设施提供足够的动能完成整个轨道而不会停滞。此外，起始速度不仅限于运动中的物体，还适用于各种现实生活场景。例如，运动员在冲刺或跳跃时必须考虑他们的起始速度。短跑运动员的表现可能会因他们离开起跑块时的初始速度而受到显著影响。同样，高跳运动员需要优化他们的起始速度以实现最大的高度。总之，起始速度的概念在理解运动和动力学中是基础性的。无论是在物理学、工程学还是体育运动中，认识到这一初始速度的重要性可以带来更好的预测、设计和表现。通过掌握起始速度的概念，人们可以深入了解运动的机制及其影响的各种因素。因此，对于学生和专业人士来说，全面掌握这个概念至关重要，因为它在理论和实践应用中具有深远的影响。