impulsive force

简明释义

冲力

英英释义

例句

1.The impulsive force 冲击力 exerted by the ball during a collision determines how far it rebounds.

在碰撞过程中，球施加的冲击力 impulsive force决定了它反弹的距离。

2.When a hammer strikes a nail, the impulsive force 冲击力 generated drives the nail into the wood.

当锤子击打钉子时，产生的冲击力 impulsive force将钉子打入木头中。

3.The impulsive force 冲击力 from the explosion shattered nearby windows.

爆炸产生的冲击力 impulsive force使附近的窗户破碎。

4.When the diver hits the water, the impulsive force 冲击力 affects how they enter the pool.

当跳水者入水时，冲击力 impulsive force影响他们进入泳池的方式。

5.In car crashes, the impulsive force 冲击力 can cause severe injuries to passengers.

在车祸中，冲击力 impulsive force可能导致乘客严重受伤。

作文

In the realm of physics, the concept of an impulsive force (冲击力) plays a crucial role in understanding how objects interact during collisions or sudden changes in motion. An impulsive force is defined as a force that acts on an object for a very short duration but produces a significant change in momentum. This principle can be observed in various real-world scenarios, from sports to vehicle accidents. When a soccer player kicks a ball, the foot applies an impulsive force (冲击力) on the ball for a fraction of a second. Despite the brief contact time, the force exerted is strong enough to propel the ball across the field at high speed. This example illustrates how a small time interval can lead to a large effect on an object's motion. The greater the force applied, the more significant the change in momentum, which is the product of mass and velocity. Another common example of impulsive force (冲击力) can be found in car accidents. When two vehicles collide, the forces involved are often extremely high but act over a very short period. The impact generates an impulsive force that can cause severe damage to both vehicles and injuries to the occupants. Understanding this concept is essential for engineers who design safety features in cars, such as airbags and crumple zones, which aim to reduce the effects of these forces on passengers. The mathematical representation of an impulsive force (冲击力) can be derived from Newton's second law of motion, which states that force equals mass times acceleration. However, when dealing with impulsive forces, we often refer to the impulse-momentum theorem. This theorem states that the impulse experienced by an object is equal to the change in its momentum. In equation form, it can be expressed as: Impulse = Change in Momentum = F * Δt Where F is the average force applied, and Δt is the time duration over which the force acts. This relationship highlights the importance of both the magnitude of the force and the time duration in determining the overall effect on an object. In conclusion, the study of impulsive force (冲击力) is vital for understanding dynamic interactions between objects. Whether in sports, automotive safety, or even in everyday activities, the principles governing impulsive force help us comprehend how forces can create significant changes in motion within a very short time frame. By grasping this concept, we can better appreciate the complexities of physical interactions and apply this knowledge to improve safety and performance in various fields.

在物理学领域，冲击力的概念在理解物体在碰撞或运动突然变化时如何相互作用中起着至关重要的作用。冲击力被定义为在短时间内作用于物体的力，但会产生显著的动量变化。这个原理可以在各种现实场景中观察到，从运动到车辆事故。当一名足球运动员踢球时，脚对球施加了一个冲击力，尽管接触时间很短，但施加的力量足够强大，可以将球以高速推进到场地另一端。这个例子说明了短时间间隔如何导致物体运动的重大影响。施加的力量越大，动量的变化就越显著，而动量是质量与速度的乘积。另一个常见的冲击力的例子可以在汽车事故中找到。当两辆车相撞时，涉及的力量通常非常大，但作用时间非常短。碰撞产生的冲击力可能会对两辆车造成严重损坏，并对乘客造成伤害。理解这个概念对于设计汽车安全功能的工程师至关重要，例如气囊和缓冲区，这些设施旨在减少这些力量对乘客的影响。冲击力的数学表示可以从牛顿第二运动定律推导出来，该定律指出，力等于质量乘以加速度。然而，在处理冲击力时，我们通常参考冲量-动量定理。该定理指出，物体所经历的冲量等于其动量的变化。用公式表示为：冲量 = 动量变化 = F * Δt其中F是施加的平均力，Δt是力作用的时间持续时间。这个关系突出了力量的大小和时间持续性在决定物体整体影响中的重要性。总之，研究冲击力对于理解物体之间的动态相互作用至关重要。无论是在体育、汽车安全还是日常活动中，支配冲击力的原则帮助我们理解力量如何在极短的时间内产生显著的运动变化。通过掌握这个概念，我们可以更好地欣赏物理相互作用的复杂性，并将这些知识应用于改善各个领域的安全性和性能。