average speed

简明释义

平均航速

英英释义

例句

1.During the race, the runner maintained an average speed 平均速度 of 5 minutes per kilometer.

在比赛期间，跑步者保持了每公里5分钟的平均速度 平均速度。

2.To calculate your average speed 平均速度, divide the total distance by the total time taken.

要计算你的平均速度 平均速度，将总距离除以总时间。

3.Cyclists often monitor their average speed 平均速度 to improve their performance.

骑自行车的人常常监测他们的平均速度 平均速度以提高他们的表现。

4.The car traveled a distance of 120 kilometers in 2 hours, so its average speed 平均速度 was 60 km/h.

这辆车在2小时内行驶了120公里，因此它的平均速度 平均速度是60公里每小时。

5.The average speed 平均速度 of a train can vary based on the route and stops.

火车的平均速度 平均速度可能会根据路线和停靠站而有所不同。

作文

Understanding the concept of average speed is essential in both everyday life and scientific contexts. Average speed refers to the total distance traveled divided by the total time taken for that journey. This simple formula can be applied in various scenarios, from planning a road trip to analyzing the performance of an athlete. For instance, consider a family planning a vacation. They need to estimate how long it will take to reach their destination, which is 300 miles away. If they expect to drive at a constant speed of 60 miles per hour, they can easily calculate the time by using the formula: time = distance ÷ speed. Therefore, the time required for the trip would be 300 miles ÷ 60 miles per hour = 5 hours. In this case, the average speed is crucial for managing their travel plans effectively.In sports, average speed plays a significant role in measuring performance. For example, during a marathon, runners often aim to maintain a specific average speed to finish the race within a certain time frame. If a runner knows the marathon distance is 26.2 miles and they want to complete it in 4 hours, they can calculate the necessary average speed by dividing the distance by the time: 26.2 miles ÷ 4 hours = 6.55 miles per hour. This understanding helps athletes pace themselves throughout the race, ensuring they do not start too fast and fatigue before the finish line.The application of average speed extends beyond personal experiences; it is also vital in fields such as physics and engineering. In physics, the concept of average speed is used to analyze motion. For example, when studying the motion of a car, scientists might measure how far it travels over a period of time to determine its average speed. This information can be critical for safety assessments, traffic management, and vehicle design.Moreover, understanding average speed can help in environmental discussions, particularly concerning transportation. With the rise of concerns about climate change, many people are seeking ways to reduce their carbon footprint. By optimizing travel routes and maintaining efficient average speeds, individuals can decrease fuel consumption and minimize emissions. For instance, cars that travel at a steady average speed tend to use less fuel than those that frequently accelerate and decelerate.In conclusion, the concept of average speed is not just a mathematical calculation; it is a practical tool that influences various aspects of our lives. Whether we are planning a trip, training for a race, or studying the principles of physics, understanding average speed allows us to make informed decisions and improve our efficiency. By grasping this concept, we can navigate our journeys more effectively and contribute positively to our environment.

理解平均速度这一概念在日常生活和科学背景中都是至关重要的。平均速度指的是总行驶距离除以总花费时间。这一简单的公式可以应用于各种场景，从计划公路旅行到分析运动员的表现。例如，考虑一个家庭计划度假。他们需要估算到达目的地的时间，该目的地距离300英里。如果他们预计以每小时60英里的恒定速度驾驶，他们可以通过使用公式：时间 = 距离 ÷ 速度，轻松计算出所需的时间。因此，旅行所需的时间将是300英里 ÷ 60英里/小时 = 5小时。在这种情况下，平均速度对于有效管理他们的旅行计划至关重要。在体育运动中，平均速度在衡量表现方面发挥着重要作用。例如，在马拉松比赛中，跑步者通常旨在保持特定的平均速度，以便在一定的时间内完成比赛。如果一名跑步者知道马拉松的距离是26.2英里，并且他们想在4小时内完成比赛，他们可以通过将距离除以时间来计算必要的平均速度：26.2英里 ÷ 4小时 = 6.55英里/小时。这种理解帮助运动员在整个比赛中保持节奏，确保他们不会起步太快而导致在终点线之前疲惫不堪。平均速度的应用不仅限于个人经历；它在物理学和工程等领域也至关重要。在物理学中，平均速度的概念用于分析运动。例如，在研究汽车运动时，科学家可能会测量其在一段时间内行驶的距离，以确定其平均速度。这些信息对于安全评估、交通管理和车辆设计至关重要。此外，理解平均速度还可以帮助环境讨论，特别是在交通运输方面。随着人们对气候变化的关注上升，许多人正在寻求减少碳足迹的方法。通过优化旅行路线并保持高效的平均速度，个人可以减少燃料消耗并最小化排放。例如，以稳定的平均速度行驶的汽车通常比那些频繁加速和减速的汽车使用更少的燃料。总之，平均速度的概念不仅仅是一个数学计算；它是一个实用工具，影响着我们生活的各个方面。无论我们是在计划旅行、为比赛训练，还是研究物理原理，理解平均速度使我们能够做出明智的决策，提高我们的效率。通过掌握这一概念，我们可以更有效地导航我们的旅程，并对环境产生积极的影响。