Asked by Judy

A graph shows distance on the vertical axis and time on the horizontal axis. If the speed is steadily increasing, and becomes a curved line on the graph, could any part of the speed lone ever become perfectly vertical? Why or why not?
Answered by bobpursley
Since slope on the distance time graph is velocity, it is hard to conceive that position changes instaneously.
Answered by Dr Russ
A vertical line will have a gradient corresponding to a velocity where rise/run=rise/0 which is an infinite velocity. As nothing can move faster than the veloity of light, a vertical (infinite) gradient is impossible.



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