EVERYDAY SCIENCE

Detailed explanation-1: -The principle is that the slope of the line on a velocity-time graph reveals useful information about the acceleration of the object. If the acceleration is zero, then the slope is zero (i.e., a horizontal line). If the acceleration is positive, then the slope is positive (i.e., an upward sloping line).

Detailed explanation-2: -Therefore, On the acceleration-time graph, a horizontal line indicates the uniform acceleration of a body.

Detailed explanation-3: -The correct option is A Constant speed. A horizontal line on a speed-time graph indicates the constant speed of an object.

Detailed explanation-4: -For example, if the acceleration is zero, then the velocity-time graph is a horizontal line (i.e., the slope is zero).

Detailed explanation-5: -The horizontal line of a distance-time graph represents that, the distance is not changing as the time passes, that is, the object is at rest.