1-D Kinematics - Lesson 1(加拿大高中物理第一课)

介绍的运动学语言

一个典型的物理过程的关注本身具有广泛的各种主题。 其中一个问题是力学 -研究对象的议案。 首6个单位的物理课堂教程将涉及到物理的议案进行调查。

当我们着眼于语言，原则和法律的描述和解释的对象运动，你的努力应围绕内在含义的信息中心。 避免记忆的资料，以及避免抽象，从物质世界，它描述和解释的信息。 相反，考虑的资料显示，它的意义和应用思想。

运动学的话是科学的描述对象使用的议案，图表，数字，图表和公式。 运动学是力学的分支。 任何的运动学研究的目的是开发先进的服务描述（并最终解释心智模式）在现实世界对象的议案。

在这一课中，我们将探讨用于描述对象的议案的措辞。 也就是说，我们将集中在运动学语言 。

希望能对获得的是与整个力学研究中使用的语言舒适的基础。

以下是与规律来描述物体的运动中列出的单词。 你的目标应该是与它们的意义变得非常熟悉。 您可以点击任何单词现在探讨其意义或进行中在本页面底部列出的顺序教训。

Introduction to the Language of Kinematics

A typical physics course concerns itself with a variety of broad topics.

One such topic is mechanics - the study of the motion of objects. The

first six units of The Physics Classroom tutorial will involve an

investigation into the physics of motion. As we focus on the language,

principles, and laws which describe and explain the motion of objects,

your efforts should center around internalizing the meaning of the

information. Avoid memorizing the information; and avoid abstracting

the information from the physical world which it describes and

explains. Rather, contemplate the information, thinking about its

meaning and its applications.

Kinematics is the science of describing the motion of objects using

words, diagrams, numbers, graphs, and equations. Kinematics is a

branch of mechanics. The goal of any study of kinematics is to develop

sophisticated mental models which serve to describe (and ultimately,

explain) the motion of real-world objects.

In this lesson, we will investigate the words used to describe the

motion of objects. That is, we will focus on the language of kinematics.

The hope is to gain a comfortable foundation with the the language

which is used throughout the study of mechanics. The words listed

below are used with regularity to describe the motion of objects. Your goal should be to become very familiar with their meaning. You may click on any word now to investigate its meaning or proceed with the

lesson in the order listed at the bottom of this page. 一维运动学 - 第1课

词语描述与运动

标量和矢量

物理学是一门数学科学。 其基本概念和原则的数学基础。 纵观我们的物理研究过程中，我们将遇到的概念有一个数学的基础上与他们有联系的品种。 虽然我们的重点往往是根据物理学的概念性质，我们会给予相当的关注和持久性的数学方面。

他运动的物体可以用语言描述。 即使是在没有物理背景的人有一个可以用来描述运动物体的话集合。 单词和词组，如要快 ， 停下来 ， 放慢 ， 加快发展 ，

把一个对象提供足够的词汇描述的议案。 在物理学中，我们使用这些字眼等等。

我们将扩大在此， 速度等词汇列表的言行距离 ， 位移 ， 速度和加速度 。 正如我们即将看到的，这些话都是有严格定义的数学量有关。 这是用来描述物体的运动数学数量可分为两类。 数量可以是一个向量或标量。 这两类可区别于他们彼此不同的定义：

 标量的数量是完全单独描述一个数量级（或数值）。

 向量的数量是完全方向描述既是规模和一个。

这个教训的其余部分将侧重于载体（标量数量的几个例子距离，位移，速度，速度和加速度）。 当你继续完成了教训，认真注意向量和标量性质的每个数量。 正如我们通过其他单位进行物理课堂上的教程，并成为引入新的数学量时，往往会首先讨论确定他们可能是一个向量或标新数量。

1-D Kinematics - Lesson 1

Describing Motion with Words

Scalars and Vectors

Physics is a mathematical science. The underlying concepts and

principles have a mathematical basis. Throughout the course of our

study of physics, we will encounter a variety of concepts which have a

mathematical basis associated with them. While our emphasis will

often be upon the conceptual nature of physics, we will give

considerable and persistent attention to its mathematical aspect.

he motion of objects can be described by words. Even a person

without a background in physics has a collection of words which can

be used to describe moving objects. Words and phrases such as going fast, stopped, slowing down, speeding up, and turning provide a

sufficient vocabulary for describing the motion of objects. In physics,

we use these words and many more. We will be expanding upon this

vocabulary list with words such as distance, displacement, speed,

velocity, and acceleration. As we will soon see, these words are

associated with mathematical quantities which have strict definitions.

The mathematical quantities which are used to describe the motion of

objects can be divided into two categories. The quantity is either a

vector or a scalar. These two categories can be distinguished from one

another by their distinct definitions:

 Scalars are quantities which are fully described by a

magnitude (or numerical value) alone.

 Vectors are quantities which are fully described by both

a magnitude and a direction.

The remainder of this lesson will focus on several examples of vector

and scalar quantities (distance, displacement, speed, velocity, and

acceleration). As you proceed through the lesson, give careful

attention to the vector and scalar nature of each quantity. As we

proceed through other units at The Physics Classroom Tutorial and

become introduced to new mathematical quantities, the discussion

will often begin by identifying the new quantity as being either a

vector or a scalar.