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Physics Assignment Help>> Motion in one Dimension

在一维运动

We live in a 3-dimensional world, so you might be thinking why should we bother analyzing 1-dimensional situations? Basically, because in any translational motion that is straight-line motion problem can be separated into one or more 1-dimensional problems that is a complex problem in physics can be analyzed by reducing it into a series of simpler problems. So to solve a problem you have to first set up a coordinate system which defines an origin or a starting point and positive and negative directions as well. And also you need to differentiate between scalars and vectors. Motion in one dimension is one of the earliest lessons found in Newton’s Classical Mechanics. Whenever a body moves with respect to time and its surroundings, the change in position of the body is known as motion. For analyzing the motion of objects in one dimension there are four basic parameters you need to be aware of. These four basic parameters are namely displacement, velocity, and acceleration and time. Among these four time is a scalar quantity, while the other three are vectors quantity. However, in 1 dimension, it's quite differentiate between a scalar and a vector and that difference will be more clear in 2 dimensions.

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移位

位移表示沿特定方向传播的距离,表示其是矢量数量。位移(∆X)定义为用X表示的最终位置与XO表示的起点之间的差异。因此,在1维排量中∆x = x- xo

速度和速度

平均速度定义为覆盖距离与经过的时间的比率。
On the other hand, the average velocity defined as the ratio of displacement to the elapsed time.
因此,平均速度通过=位移 /经过的时间给出。
Average velocity can be zero as displacement can be zero but average speed can never be zero as distance covered is always a positive and finite quantity.
瞬时速度V为瞬时速度V定义为随时间的移动粒子位置变化速率,时间间隔很小。如果我们认为位移为∆X,时间间隔为∆T,则在此时间间隔中的瞬时速度由以下方式给出:∆X/∆T
瞬时速度仅仅是瞬时速度的大小,因为速度是标量量,而速度是矢量数量。

Acceleration

物体加速度意味着其速度变化可以是正加速度或负加速度的变化。与平均速度相似,平均加速度的相似之处定义为在很短的时间间隔内速度变化的比率。
The instantaneous acceleration is given by: acceleration, a=∆v/∆t. As velocity is vector quantity and acceleration is defined by the change in velocity over an interval of time, so acceleration is also a vector quantity

Kinematics and Dynamics

运动学关注的是机制的部分,该机制涉及对象的运动及其描述性知识,而无需考虑起源原因。

而动力学涉及与其原因有关的对象的运动的研究。

Motion in One Dimension

Motion of an object in a straight line is called motion in one dimension. The position of an object or particle is described only by one variable which is indicated either by x. For a moving particle along with a straight line (1-D), all vector quantities such as velocity, position, displacement and acceleration have only one non zero component.

Motion in Two Dimensions

Motion in two dimensions is concerned with motion of a particle and an object in a plane. For two dimension motion velocity and acceleration can be described by 2 components in two mutually perpendicular directions in Cartesian coordinate system. Thus vector quantities such as velocity, displacement, position and acceleration have two non-zero components.

Equations of Motion with constant acceleration

a. v = u + at
b. S = ut + 1/2(at2)
C。v2= u2+2AS

Where u = initial velocity, v= final velocity, s = displacement

移位in nthsecond

Sn=u+a/2(2n-1)

Equation of motion on an inclined plane

Motion in Two Dimensions Assignment Help

相关话题

1.定义运动学和动力学
2. Motion in one dimension
3. Motion in two dimension
4. Distance & Displacement
5. Average Speed and Velocity
6. Acceleration
7. Equation of Motion in Straight Line
8. Equation of Motion in Inclined Plane
9.相对速度
10. Representation of graphs(variation in displacement, velocity and acceleration in different types of motion)

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