Which of the following best describes the velocity-time graph for an object moving with uniform velocity?
A straight horizontal line parallel to the time axis
In a velocity-time (v-t) graph:
- The y-axis represents velocity; the x-axis represents time.
- For uniform (constant) velocity: velocity does not change with time.
- Therefore, the graph is a straight horizontal line parallel to the time axis.
The slope of a v-t graph = acceleration. A horizontal line has zero slope → zero acceleration → uniform velocity. ✓
Other graph shapes: sloping upward = uniform acceleration; curved = non-uniform acceleration; starting from origin sloping up = uniformly accelerated from rest.
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