Distance-Time graph.

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Presentation transcript:

Distance-Time graph

Motion is a change in position measured by distance and time. Speed tells us the rate at which an object moves. Velocity tells the speed and direction of a moving object. Acceleration tells us the rate speed or direction changes.

Distance-Time graph Plotting distance against time can tell you a lot about motion.

Distance-Time graph

If an object is not moving, a horizontal line is shown on a distance-time graph.

If an object is moving at a constant speed, it means it has the same increase in distance in a given time:

Distance-Time graph

Distance-Time graph The steeper the graph, the faster the motion. A horizontal line means the object is not changing its position - it is not moving, it is at rest. A downward sloping line means the object is returning to the start.