force of reaction

简明释义

反力

英英释义

例句

1.In swimming, when a swimmer pushes against the water, the force of reaction 反作用力 propels them forward.

在游泳中，当游泳者推水时，反作用力 反作用力推动他们向前。

2.The force of reaction 反作用力 is crucial in understanding how vehicles accelerate on the road.

理解车辆在道路上加速时的反作用力 反作用力至关重要。

3.When you jump off a diving board, the force of reaction 反作用力 from the board helps you launch into the air.

当你从跳板上跳下时，跳板的反作用力 反作用力帮助你腾空而起。

4.In a car crash, the force of reaction 反作用力 can cause significant damage to both vehicles involved.

在汽车碰撞中，反作用力 反作用力可能会对双方车辆造成重大损害。

5.When a rocket launches, the engines produce a strong thrust, and the force of reaction 反作用力 pushes it upward.

当火箭发射时，发动机产生强大的推力，而反作用力 反作用力将其向上推。

作文

In physics, the concept of the force of reaction is fundamental to understanding how objects interact with one another. According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction. This means that whenever one object exerts a force on another, the second object exerts a force of equal magnitude but in the opposite direction back on the first object. This principle can be observed in various everyday situations, from walking to driving a car.For instance, when you walk, your foot pushes down against the ground. In response, the ground pushes back up against your foot with the same amount of force, which enables you to move forward. This interaction exemplifies the force of reaction as it illustrates how forces work in pairs. Without this reactionary force, we would not be able to walk or run effectively.Moreover, the force of reaction is crucial in understanding more complex systems, such as vehicles in motion. When a car accelerates, the tires push backward against the road. In turn, the road exerts a force of reaction that propels the car forward. This interaction between the tires and the road surface is essential for efficient driving and is a practical application of Newton's laws.The force of reaction also plays a significant role in sports. Take basketball, for example. When a player jumps to shoot the ball, they push down against the court with their feet. The court then provides a force of reaction that lifts the player into the air. The higher the player pushes down, the greater the upward force they receive from the court, allowing them to achieve greater heights in their jump.In engineering and design, understanding the force of reaction is vital for creating stable structures. For instance, when designing a bridge, engineers must consider how the weight of the bridge and any vehicles on it will exert a downward force. The materials used to construct the bridge must be strong enough to withstand these forces, and the force of reaction from the ground below must be sufficient to support the entire structure.Furthermore, the force of reaction is not limited to solid objects; it also applies to fluids. When a boat moves through water, it displaces a volume of water, which exerts an upward force of reaction known as buoyancy. This principle explains why some objects float while others sink, depending on their density relative to the fluid.In conclusion, the force of reaction is a vital concept that permeates various aspects of our daily lives, from simple actions like walking to complex engineering designs. Understanding this principle not only enhances our grasp of physics but also improves our ability to analyze and navigate the world around us. By recognizing the interplay of action and reaction, we can appreciate the elegance of physical laws that govern our universe and apply this knowledge in practical ways to enhance our experiences and innovations.

在物理学中，反作用力的概念对于理解物体之间的相互作用至关重要。根据牛顿的第三运动定律，每一个动作都有一个相等且相反的反应。这意味着每当一个物体对另一个物体施加力时，第二个物体会以相同的大小但相反的方向对第一个物体施加力。这一原理可以在各种日常情况中观察到，从走路到开车。例如，当你走路时，你的脚向下推地面。作为回应，地面以相同的力量向上推你的脚，这使你能够向前移动。这种相互作用体现了反作用力，因为它说明了力是成对工作的。如果没有这种反作用力，我们将无法有效地走路或跑步。此外，反作用力在理解更复杂的系统（如运动中的车辆）中也至关重要。当汽车加速时，轮胎向后推路面。反过来，路面施加一个反作用力，推动汽车向前。这种轮胎与路面之间的相互作用对高效驾驶至关重要，并且是牛顿定律的实际应用。反作用力在体育运动中也发挥着重要作用。以篮球为例。当球员跳起来投篮时，他们的脚向下推地面。地面随后提供一个反作用力，将球员抬到空中。球员向下推的力量越大，他们从地面获得的向上的反作用力就越大，使他们在跳跃时能达到更高的高度。在工程和设计中，理解反作用力对于创建稳定的结构至关重要。例如，在设计桥梁时，工程师必须考虑桥梁及其上任何车辆的重量将施加一个向下的力量。用于建造桥梁的材料必须足够坚固，以承受这些力量，而下面地面的反作用力必须足够支持整个结构。此外，反作用力不仅限于固体物体；它也适用于流体。当一艘船在水中移动时，它会排开一定体积的水，这会施加一个向上的反作用力，称为浮力。这个原理解释了为什么某些物体会漂浮，而其他物体则会沉没，具体取决于它们相对于流体的密度。总之，反作用力是一个渗透我们日常生活各个方面的重要概念，从简单的动作如走路到复杂的工程设计。理解这一原理不仅增强了我们对物理学的理解，也提高了我们分析和驾驭周围世界的能力。通过认识到行动与反应之间的相互作用，我们可以欣赏支配我们宇宙的物理法则的优雅，并以实用的方式运用这些知识，以增强我们的体验和创新。