“velocity–time graph”的概念、定义、翻译、参考文献-科学参考

velocity–time graph

Mathematics

单词	velocity–time graph
释义	velocity–time graph Mathematics A graph that shows velocity plotted against time for a particle moving in a straight line. Let x(t) and v(t) be the displacement and velocity, respectively, of the particle at time t. The velocity–time graph is the graph y = v(t), where the t-axis is horizontal and the y-axis is vertical with the positive direction upwards. The gradient of the velocity–time graph at any point is equal to the acceleration of the particle at that time. Also, $\int_{t_{1}}^{t_{2}} v (t) d t = x (t_{2}) - x (t_{1}),$ is the displacement of the particle during the time interval. Note that this is not necessarily the distance travelled.
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