first law of newton

简明释义

牛顿第一定律

英英释义

例句

1.When you push a stationary car, it won't move until you apply enough force, demonstrating the first law of newton 牛顿第一定律.

当你推一辆静止的汽车时，直到你施加足够的力它才会移动，这展示了牛顿第一定律。

2.In space, an astronaut floats because of the first law of newton 牛顿第一定律; without gravity, they continue in their state of motion.

在太空中，宇航员漂浮是因为牛顿第一定律；没有重力，他们保持运动状态。

3.The first law of newton 牛顿第一定律 helps explain why objects at rest stay at rest unless acted upon by an external force.

这牛顿第一定律帮助解释了为什么静止的物体会保持静止，除非受到外力作用。

4.When a car suddenly stops, passengers lurch forward due to the first law of newton 牛顿第一定律.

当汽车突然停下时，乘客会因牛顿第一定律而向前倾斜。

5.A soccer ball will not roll until someone kicks it, which illustrates the first law of newton 牛顿第一定律.

一颗足球在被人踢之前不会滚动，这说明了牛顿第一定律。

作文

The first law of Newton states that an object at rest will remain at rest, and an object in motion will continue in motion with the same speed and in the same direction unless acted upon by a net external force. This fundamental principle of physics is often referred to as the law of inertia. Understanding this law is crucial not only in the realm of physics but also in our everyday lives. To illustrate the first law of Newton, consider a simple example: a soccer ball lying on a field. The ball will not move until a player kicks it. Once the ball is in motion, it will continue to roll across the grass until friction, which is a form of external force, eventually brings it to a stop. This scenario highlights how objects resist changes to their state of motion, demonstrating the concept of inertia.Inertia is a property of matter that describes an object's tendency to maintain its current state of motion. The more massive an object is, the greater its inertia, and thus the harder it is to change its motion. For instance, pushing a heavy car requires much more force than pushing a small bicycle. This difference in required force is a direct application of the first law of Newton.The implications of this law extend beyond simple mechanical systems. In our daily lives, we experience the effects of inertia all the time. For example, when a car suddenly stops, passengers inside tend to lurch forward. This is because their bodies want to maintain their state of motion, as dictated by the first law of Newton. Seatbelts are designed to counteract this effect, providing the necessary external force to keep passengers safely in their seats.Furthermore, the first law of Newton is essential for understanding more complex physical phenomena. In space, where there is minimal friction, objects can travel vast distances without slowing down. A spacecraft, once propelled into motion, can continue on its trajectory for an extended period, demonstrating the law's relevance in astrodynamics.In the context of technology and engineering, the first law of Newton plays a critical role in the design of vehicles, machinery, and even amusement park rides. Engineers must account for inertia when creating systems that require precise control over movement. Failure to consider this law can lead to accidents or malfunctions, emphasizing its importance in practical applications.In conclusion, the first law of Newton is a fundamental principle that governs the behavior of objects in motion. Its significance reaches far beyond theoretical physics; it influences our daily experiences and technological advancements. By understanding this law, we gain insight into the natural world and the forces that shape our lives. Whether we are aware of it or not, the first law of Newton is at play in every aspect of our existence, reminding us of the inherent properties of matter and motion.

牛顿的第一定律指出，静止的物体将保持静止，而运动的物体将在没有外部净力作用的情况下，以相同的速度和方向继续运动。这一基本物理原理通常被称为惯性定律。理解这一法则不仅在物理学领域至关重要，而且在我们的日常生活中也同样重要。为了说明牛顿的第一定律，考虑一个简单的例子：一只静置在球场上的足球。球不会动，直到一个球员踢它。一旦球开始运动，它将继续在草地上滚动，直到摩擦（这是一种外部力）最终使其停止。这个场景突显了物体如何抵抗运动状态的变化，展示了惯性的概念。惯性是物质的一种属性，描述了物体保持当前运动状态的倾向。物体的质量越大，其惯性就越大，因此改变其运动状态就越困难。例如，推动一辆重车需要比推动一辆小自行车更多的力量。这种所需力量的差异直接应用了牛顿的第一定律。这一法则的影响超越了简单的机械系统。在我们的日常生活中，我们时常体验到惯性的影响。例如，当汽车突然停下时，车内的乘客往往会向前倾。这是因为他们的身体想要保持运动状态，这正是由牛顿的第一定律所决定的。安全带旨在抵消这种效果，提供必要的外部力量，使乘客安全地留在座位上。此外，牛顿的第一定律对理解更复杂的物理现象至关重要。在太空中，由于摩擦力很小，物体可以在没有减速的情况下行驶很远的距离。一艘宇宙飞船一旦被推入运动，可以在其轨道上持续很长时间，展示了该法则在天体动力学中的相关性。在技术和工程的背景下，牛顿的第一定律在车辆、机械甚至游乐园设施的设计中发挥着关键作用。工程师在创建需要精确控制运动的系统时，必须考虑惯性。如果未能考虑这一法则，可能会导致事故或故障，从而强调了其在实际应用中的重要性。总之，牛顿的第一定律是支配物体运动行为的基本原则。它的重要性远远超出了理论物理；它影响着我们的日常经历和技术进步。通过理解这一法则，我们获得了对自然世界及其塑造我们生活的力量的洞察。无论我们是否意识到，牛顿的第一定律在我们存在的每一个方面都在发挥作用，提醒我们物质和运动的固有属性。