Answer:
Time is plotted on the x-axis in seconds, and the velocity of the object is plotted on the y-axis in meter per second
Explanation:
The velocity of a moving object is defined as the rate of change of distance with time. The graph described in this question is a graph of whose slope depicts acceleration. Acceleration is the rate of change of velocity with time.
So for a graph of velocity vs time, the Time which is the independent variable is plotted in the x-axis, while the velocity is the dependent variable, because its outcome is dependent on the time variable, hence it is plotted on the y-axis.
The dependent variable is one that is subject to the control of the experimenter (time) while the independent variable has its outcome dependent upon how the independent variable changes (velocity).
