Uniform movement

S x t diagram

There are several ways to represent displacement as a function of time. One is through graphs called offset diagrams. versus time (s) x t). In the following example, we have a diagram showing a retrograde motion:

By analyzing the graph, you can extract data that should help you solve problems:

s 50m 20m -10m
T 0s 1s 2s

We then know that the starting position will be the position = 50m when time equals zero. We also know that the final position s = -10m will happen when t = 2s. From there, it is easy to use the space equation and find the body velocity:

Know more:
The velocity shall be numerically equal to the tangent of the angle formed in relation to the line where it is situated, provided that the trajectory is uniform straight.

V x t diagram

In a uniform motion, the velocity remains the same over time. Therefore your graph is expressed by a line:

Given this diagram, one way to determine the displacement of the furniture is to calculate the area under the line comprised in the time interval considered.

Relative Speed

It is the speed of one furniture relative to another.

For example:
Consider two trains running at uniform speeds and that . Relative speed will be given if we consider that one of the trains (train 1) is stationary and the other (train 2) is moving. That is, your module will be given by .

Generally speaking, we can say that the relative velocity is the velocity of a mobile relative to another reference mobile.