Calculating speed from a distance-time graph
Speed = distance/time
So, for part A of the graph, speed=20m÷5s=4m/s
To calculate the speed for other parts of the graph, you need to use the slope o0r gradient of the graph.
Example 1 shows you how to do this for part B of the graph.
Calculating acceleration from velocity-time graph
Acceleration=change in velocity/time taken
So, for part P of the graph, acceleration=2m/s÷2s=1m/s2
To calculate the acceleration for other parts of the graph, you need to use the slope or gradient of the graph.
Example 2 shows you how to do this for part Q of the graph.
Calculating distance traveled from a velocity-time graph
The area beneath a velocity-time graph tells you the distance that an object has traveled.
Example 3 shows how you can work out from the graph the distance traveled in the first 5 seconds.
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