How do you calculate average velocity from a distance-time graph?

You calculate average velocity from a distance-time graph by dividing the total distance travelled by the total time taken.

In more detail, a distance-time graph is a visual representation of an object's motion, where the horizontal axis represents time and the vertical axis represents distance. The slope of the line on this graph represents the object's velocity. If the line is straight, it means the velocity is constant. If the line is curved, it means the velocity is changing.

To calculate the average velocity, you need to find the total distance travelled and the total time taken. The total distance travelled is represented by the vertical distance between the starting and ending points on the graph. The total time taken is represented by the horizontal distance between these same points.

Once you have these two values, you can calculate the average velocity by dividing the total distance by the total time. This will give you the average speed of the object over the entire time period represented on the graph.

Remember, velocity is a vector quantity, meaning it has both magnitude (speed) and direction. If the object changes direction during the time period represented on the graph, you'll need to take this into account when calculating the average velocity.

In summary, to calculate average velocity from a distance-time graph, identify the total distance travelled and the total time taken from the graph, then divide the distance by the time. If the object changes direction, consider this when determining the average velocity.