The value obtained will give us the value of velocity.

Here, we can directly calculate the slope by applying the rules of trigonometry. In the graph above, we can find the velocity because of the presence of a constant slope indicating constant or positive velocity and no acceleration. The average velocity is given by the total change in position divided by the total change in time. The average velocity of an object can be calculated from the position-time graph with a constant slope. Position-time graph tells you about the motion of an object at different instances.Ĭalculation of velocity from position-time graph: More the slope, the greater the velocity.Ī horizontal straight line in the graph indicates a constant velocity which means that the position of the object is not changing. If the slope is positive, it means its velocity is increasing. The straight line obtained in the graph after marking all the points gives the velocity of the object. This graph will tell the distance travelled by a body starting from its initial point. Since this graph represents the same conditions and an inclined slope, this graph represents a uniform rectilinear motion.

When a body travels equal distances in equal intervals of time by keeping its velocity constant, it is called uniform rectilinear motion. This will give you a straight line, which will either have a zero slope or a positive slope. Step 3: Mark the distance travelled at different instances of time. Step 2: Take the x-axis as time since time is an independent variable, and independent variables are always taken on the x-axis. Step 1: Take the y-axis as a position relative to the starting point since the position is a dependent variable, and dependent variables are taken on the y-axis. They are used to describe the motion of a particle in a space, but they can be applied to any motion. Position-time graphs are used to describe the motion of an object in space and time that are a function of position and time in space. The graph depicted shows the velocity of a particle as a function of position and time. In physics, position-time graphs describe the velocity of a particle in time and space. A position-time graph is a plot of positions versus time, showing the relation of positions to time in space or time, but may not show the trajectory of those positions as they move.

Position time graph