average speed

简明释义

平均速平均航速

英英释义

例句

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

要计算你的平均速度，将总距离除以总耗时。平均速度

2.Cyclists often track their average speed during long rides to monitor their performance.平均速度

骑自行车的人通常在长途骑行中跟踪他们的平均速度以监测他们的表现。平均速度

3.When running a marathon, many athletes aim for a consistent average speed throughout the race.平均速度

在马拉松比赛中，许多运动员力求在整个比赛中保持一致的平均速度。平均速度

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

火车的平均速度可能会根据路线和停靠站而有所不同。平均速度

5.The car traveled 120 kilometers in 2 hours, so its average speed is 平均速度 60 km/h.

这辆车在2小时内行驶了120公里，所以它的平均速度是平均速度 60公里/小时。

作文

When we talk about traveling from one place to another, the concept of average speed becomes crucial. Average speed is defined as the total distance traveled divided by the total time taken to cover that distance. Understanding average speed can help us plan our journeys more effectively, whether we are driving, cycling, or even walking. For example, if you are planning a road trip of 300 miles and expect to complete it in 5 hours, you can calculate your average speed by dividing the distance by the time: 300 miles ÷ 5 hours = 60 miles per hour. This means that if you maintain a constant average speed of 60 mph, you will reach your destination in the expected time. However, it is essential to remember that average speed does not account for variations in speed during the journey. For instance, you might drive faster on the highway and slower in urban areas due to traffic conditions. Consequently, while your average speed gives a good estimate of how long the journey will take, it may not reflect the actual experience of traveling. In addition, average speed can be influenced by various factors such as weather conditions, road types, and the vehicle used. For instance, driving in heavy rain or snow can significantly reduce your average speed due to the need for caution. Similarly, rough terrains like mountains or unpaved roads can also slow you down, impacting your overall travel time. To illustrate this further, let’s consider a scenario where you travel on a mixed-terrain route. Suppose you start with a segment of 100 miles on a highway at an average speed of 70 mph, followed by 50 miles in a mountainous area at an average speed of 40 mph. The time taken for the highway segment would be approximately 1.43 hours (100 miles ÷ 70 mph), while the mountainous segment would take about 1.25 hours (50 miles ÷ 40 mph). Adding these together, your total travel time is about 2.68 hours, resulting in an overall average speed for the entire 150-mile journey of approximately 56 mph. Understanding average speed is not only important for personal travel but also for various fields such as physics, engineering, and even sports. In physics, average speed helps in understanding motion, while engineers use it to design efficient transportation systems. In sports, athletes often analyze their average speed during races to improve performance. Moreover, it is essential to distinguish between average speed and instantaneous speed. While average speed provides an overview of the entire journey, instantaneous speed refers to the speed at a particular moment. For instance, when you glance at your car's speedometer, you see your instantaneous speed, which can fluctuate based on acceleration and deceleration.In conclusion, the concept of average speed is vital for effective travel planning and understanding motion. By grasping how to calculate and interpret average speed, we can make informed decisions about our journeys, ensuring we arrive at our destinations on time. Whether for leisure or necessity, knowing your average speed can enhance your travel experience and help you navigate the roads more efficiently.

当我们谈论从一个地方旅行到另一个地方时，平均速度的概念变得至关重要。平均速度被定义为总行驶距离除以覆盖该距离所用的总时间。理解平均速度可以帮助我们更有效地规划旅行，无论是开车、骑自行车还是步行。例如，如果你计划进行一次300英里的公路旅行，并预计在5小时内完成，你可以通过将距离除以时间来计算你的平均速度：300英里 ÷ 5小时 = 60英里每小时。这意味着如果你保持60英里每小时的恒定平均速度，你将按预期时间到达目的地。然而，必须记住的是，平均速度并不考虑旅途中速度的变化。例如，你可能在高速公路上开得更快，而在城市地区由于交通状况而开得更慢。因此，虽然你的平均速度提供了一个估计的旅行时间，但它可能无法反映实际的旅行体验。此外，平均速度还会受到天气条件、道路类型和使用的车辆等各种因素的影响。例如，在大雨或大雪中驾驶可能会显著降低你的平均速度，因为需要更加小心。同样，崎岖的地形如山区或未铺砌的道路也会减慢你的速度，从而影响整体旅行时间。为了进一步说明这一点，让我们考虑一个你在混合地形路线上的旅行场景。假设你首先在高速公路上以平均速度70英里每小时行驶100英里，然后在山区以平均速度40英里每小时行驶50英里。高速公路段的时间大约为1.43小时（100英里 ÷ 70英里每小时），而山区段约需要1.25小时（50英里 ÷ 40英里每小时）。将这些相加，你的总旅行时间约为2.68小时，因此整个150英里旅程的平均速度约为56英里每小时。理解平均速度不仅对个人旅行重要，还对物理学、工程学甚至体育等多个领域至关重要。在物理学中，平均速度有助于理解运动，而工程师则利用它来设计高效的交通系统。在体育中，运动员通常分析他们在比赛中的平均速度以提高表现。此外，区分平均速度和瞬时速度也是至关重要的。虽然平均速度提供了整个旅程的概述，但瞬时速度指的是特定时刻的速度。例如，当你瞥一眼汽车的速度表时，你看到的是瞬时速度，这可能会根据加速和减速而波动。总之，平均速度的概念对于有效的旅行规划和理解运动至关重要。通过掌握如何计算和解释平均速度，我们可以对我们的旅程做出明智的决策，确保准时到达目的地。无论是出于休闲还是必要，了解你的平均速度都可以增强你的旅行体验，帮助你更有效地驾驭道路。