perfectly elastic collision

简明释义

完全弹性碰撞

英英释义

例句

1.The physics lab demonstrated a perfectly elastic collision 完全弹性碰撞 using two identical metal balls on a track.

物理实验室通过在轨道上使用两个相同的金属球演示了完全弹性碰撞 完全弹性碰撞。

2.In space, two asteroids colliding can be modeled as a perfectly elastic collision 完全弹性碰撞, assuming no external forces act on them.

在太空中，两颗小行星的碰撞可以被建模为完全弹性碰撞 完全弹性碰撞，假设没有外力作用于它们。

3.In a game of billiards, when the cue ball strikes the eight ball, they undergo a perfectly elastic collision 完全弹性碰撞 where both momentum and kinetic energy are conserved.

在一场台球比赛中，当母球击打八号球时，它们经历了一次完全弹性碰撞 完全弹性碰撞，此时动量和动能都得到了守恒。

4.When two ice skaters push off each other, their interaction can be approximated as a perfectly elastic collision 完全弹性碰撞 if we ignore friction.

当两名滑冰者相互推开时，如果忽略摩擦，他们的互动可以近似看作是完全弹性碰撞 完全弹性碰撞。

5.The video game simulates a perfectly elastic collision 完全弹性碰撞 between balls to create realistic physics effects.

这款视频游戏模拟了球之间的完全弹性碰撞 完全弹性碰撞，以产生真实的物理效果。

作文

In the realm of physics, the concept of a perfectly elastic collision is fundamental to understanding how objects interact with one another. A perfectly elastic collision is defined as an event where two or more bodies collide and then separate without any loss of kinetic energy. This means that the total kinetic energy before the collision is equal to the total kinetic energy after the collision. Such collisions are idealized scenarios that help physicists model and analyze real-world interactions. One of the most common examples of a perfectly elastic collision can be found in the behavior of gas molecules. When gas particles collide with each other, they do so in a manner that is very close to being perfectly elastic. The energy exchanged during these collisions does not result in any permanent deformation of the particles; instead, they bounce off each other while conserving their overall kinetic energy. This principle is crucial for understanding gas laws and the behavior of gases under different conditions. Another classic example is found in the game of billiards. When a cue ball strikes another ball on the table, if we assume that there are no external forces acting on the system and that both balls are made of perfectly rigid materials, we can consider this collision to be a perfectly elastic collision. In reality, however, some energy is lost to sound, heat, and minor deformations, which makes such collisions only approximately elastic. Yet, for the sake of analysis, the concept of a perfectly elastic collision provides a useful framework for predicting the outcomes of such interactions. In contrast to perfectly elastic collisions, there are inelastic collisions where kinetic energy is not conserved. In these types of collisions, some of the kinetic energy is transformed into other forms of energy, such as thermal energy or sound. A common example of this would be a car crash where vehicles crumple upon impact, converting kinetic energy into deformation and heat. Understanding the difference between these types of collisions is essential for engineers and safety designers who work to improve vehicle safety and minimize injury in accidents. The mathematical treatment of perfectly elastic collisions often involves the conservation of momentum and kinetic energy. For two colliding objects with masses m1 and m2, and initial velocities u1 and u2, the final velocities v1 and v2 can be calculated using specific formulas derived from these conservation laws. This mathematical approach allows scientists and engineers to predict the outcome of collisions accurately, which is vital in fields ranging from automotive engineering to sports science. In conclusion, the idea of a perfectly elastic collision serves as a cornerstone in the study of mechanics. While real-world collisions may never achieve perfect elasticity, the concept helps simplify complex interactions and provides a basis for further exploration into the dynamics of motion. By understanding perfectly elastic collisions, we gain insight into the fundamental principles governing the behavior of physical systems, ultimately enriching our comprehension of the universe around us.

在物理学领域，完全弹性碰撞的概念对于理解物体之间的相互作用至关重要。完全弹性碰撞被定义为两个或多个物体碰撞后分开，而没有任何动能损失的事件。这意味着碰撞前的总动能等于碰撞后的总动能。这种碰撞是理想化的场景，帮助物理学家建模和分析现实世界中的相互作用。一个常见的例子是气体分子的行为。当气体粒子相互碰撞时，它们的碰撞方式非常接近于完全弹性碰撞。参与这些碰撞的粒子之间交换的能量不会导致粒子发生永久性形变；相反，它们会相互弹开，同时保持整体动能的守恒。这个原理对于理解气体定律和气体在不同条件下的行为至关重要。另一个经典的例子可以在台球游戏中找到。当一颗母球撞击桌上的另一颗球时，如果我们假设没有外力作用于系统，并且两颗球都是由完全刚性材料制成的，我们可以认为这种碰撞是完全弹性碰撞。然而，实际上，碰撞中一些能量会以声音、热量和微小形变的形式损失，这使得这些碰撞仅仅是近似弹性的。然而，为了分析的方便，完全弹性碰撞的概念提供了一个有用的框架来预测此类相互作用的结果。与完全弹性碰撞相对的是非弹性碰撞，其中动能不守恒。在这些类型的碰撞中，一部分动能转化为其他形式的能量，例如热能或声音。一个常见的例子是汽车碰撞，在这种情况下，车辆在撞击时会变形，将动能转化为变形和热能。理解这两种碰撞之间的区别对于工程师和安全设计师至关重要，他们致力于提高车辆安全性并尽量减少事故中的伤害。对于完全弹性碰撞的数学处理通常涉及动量和动能的守恒。对于两个碰撞物体，其质量分别为m1和m2，初始速度为u1和u2，最终速度v1和v2可以使用从这些守恒定律推导出的特定公式进行计算。这种数学方法使科学家和工程师能够准确预测碰撞的结果，这在汽车工程到运动科学等领域至关重要。总之，完全弹性碰撞的概念在力学研究中起着基础作用。虽然现实世界中的碰撞可能永远无法实现完全弹性，但这一概念有助于简化复杂的相互作用，并为进一步探索运动动力学提供了基础。通过理解完全弹性碰撞，我们对支配物理系统行为的基本原理有了更深入的了解，最终丰富了我们对周围宇宙的理解。