If the line on a velocity-time graph is horizontal, the acceleration is ZERO, therefore the object is travelling at a steady speed
The gradient of the line on a velocity-time graph represents acceleration. The steeper the gradient, the greater the acceleration
The area under the line on a velocity-time graph represents the distance travelled in a given time. The bigger the area, the greater the distance travelled
If the gradient of the line is negative, the object is decelerating
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