GENERAL KNOWLEDGE

Detailed explanation-1: -A horizontal line on a speed-time graph indicates the constant speed of an object.

Detailed explanation-2: -The horizontal line signifies that the velocity is not varying with the increasing time. The acceleration will be zero as the velocity is fixed. The slope on a graph depicts the acceleration. If the slope is zero, then the acceleration will also be zero.

Detailed explanation-3: -Therefore, On the acceleration-time graph, a horizontal line indicates the uniform acceleration of a body.

Detailed explanation-4: -Constant Velocity versus Changing Velocity Note that a motion described as a constant, positive velocity results in a line of zero slope (a horizontal line has zero slope) when plotted as a velocity-time graph.

Detailed explanation-5: -In each time interval, if a body or the object is traveling the same distance in the same direction, then we can say that its velocity is constant. Because velocity does not change with time, the plot of the constant velocity vs. time graph will be a horizontal line parallel to the x axis or the time axis.