What is the meaning of "below horizontal axis" on a position vs. time graph

•Any point below the t = axis means that the object is in the opposite direction than when the line was above the axis. ... (horizontal) Each point on the time axis has a positive speed, which means that the object is moving forward.

•In a position-time diagram, the speed of a moving object is indicated by the slope or slope of the diagram line. If the line in the graph is horizontal, then the line after time = 5 seconds in graph 2 in the following figure, so the slope is 0, as is the speed. Object position does not change

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the answer would be a

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

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