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Answer:
Distance' is the total length travelled by an object. The standard unit is the 'metre'.
A distance-time graph shows how far an object has travelled in a given time.
Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom).
Below you can see that the object represented by the blue line has travelled 10m in 2s whereas the object represented by the red line has only travelled 4m in this time and is therefore travelling more slowly.

'Straight lines' on a distance-time graph tell us that the object is travelling at a constant speed. Note that you can think of a stationary object (not moving) as travelling at a constant speed of 0 m/s. On a distance-time graph, there are no line sloping downwards. A moving object is always 'increasing' its total length moved with time.

'Curved lines' on a distance time graph indicate that the speed is changing. The object is either getting faster = 'accelerating' or slowing down = 'decelerating'. You can see that the distanced moved through each second is changing.
Answer:
Distance' is the total length travelled by an object. The standard unit is the 'metre'.
A distance-time graph shows how far an object has travelled in a given time.
Distance is plotted on the Y-axis (left) and Time is plotted on the X-axis (bottom).
Below you can see that the object represented by the blue line has travelled 10m in 2s whereas the object represented by the red line has only travelled 4m in this time and is therefore travelling more slowly.

'Straight lines' on a distance-time graph tell us that the object is travelling at a constant speed. Note that you can think of a stationary object (not moving) as travelling at a constant speed of 0 m/s. On a distance-time graph, there are no line sloping downwards. A moving object is always 'increasing' its total length moved with time.

'Curved lines' on a distance time graph indicate that the speed is changing. The object is either getting faster = 'accelerating' or slowing down = 'decelerating'. You can see that the distanced moved through each second is changing.