MECHANICS (MOTION) / VELOCITY-TIME GRAPHS - Pathwayz
All of these relationships can now be written in a single equation. Compare the displacement-time equation for constant velocity with the classic. The velocity-time graph is derived from the position-time graph. The difference between them is that the velocity-time graph reveals the speed. In this lesson, we will look at an example of a velocity vs. time graph. By examining the shape of the graph, it is possible to accurately describe.
This includes plotting an object's position, velocity, acceleration and other relevant data. The graphical representation of one form of motion can lead to the graphs of the other forms of motion.
For instance, the velocity-time graph is derived from the position-time graph. Similarly, the acceleration-time graph is derived from the velocity-time graph.
What are velocity vs. time graphs?
The slopes of each graph relate to the various graphical representations of motion. The difference between them is that the velocity-time graph reveals the speed of an object and whether it is slowing down or speeding upwhile the position-time graph describes the motion of an object over a period of time. The Position-Time Graph The position-time graph describes the motion of an object over a period of time.
Since the graph is a velocity-time graph, the velocity would be positive whenever the line lies in the positive region above the x-axis of the graph.
Meaning of Shape for a v-t Graph
Similarly, the velocity would be negative whenever the line lies in the negative region below the x-axis of the graph. As learned in Lesson 1a positive velocity means the object is moving in the positive direction; and a negative velocity means the object is moving in the negative direction.
So one knows an object is moving in the positive direction if the line is located in the positive region of the graph whether it is sloping up or sloping down. And one knows that an object is moving in the negative direction if the line is located in the negative region of the graph whether it is sloping up or sloping down.
And finally, if a line crosses over the x-axis from the positive region to the negative region of the graph or vice versathen the object has changed directions. Speeding Up versus Slowing Down Now how can one tell if the object is speeding up or slowing down?
There is something about a line graph that makes people think they're looking at the path of an object. Don't think like this. Don't look at these graphs and think of them as a picture of a moving object. Instead, think of them as the record of an object's velocity. In these graphs, higher means faster not farther.
Difference Between Velocity Time Graph & Position Time Graph | Sciencing
These particular graphs are all horizontal. The initial velocity of each object is the same as the final velocity is the same as every velocity in between.
The velocity of each of these objects is constant during this ten second interval. In comparison, when the curve on a velocity-time graph is straight but not horizontal, the velocity is changing.Velocity Time Graphs : Motion - Physics - Class 9 - CBSE
The three curves to the right each have a different slope. The graph with the steepest slope experiences the fastest change in velocity.