Answer:
Since the slope of
the displacement - time graph of uniform motion in one dimension represents
the velocity of the object, hence the line showing greater slope in graph
corresponds to greater velocity of the object. Therefore, the line making angle
60° with time axis represents greater velocity:
Ratio of two
velocities; \[\frac{{{\upsilon
}_{A}}}{{{\upsilon }_{B}}}=\frac{\tan {{30}^{o}}}{\tan
{{60}^{o}}}=\frac{1/\sqrt{3}}{\sqrt{3}}=\frac{1}{3}\]
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