Answer:
1. 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'
2. You can describe the motion of an object by its position, speed, direction, and acceleration. An object is moving if its position relative to a fixed point is changing.
Explanation:
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