Question

what is shown by this velocity time graph? uniform positive acceleration, uniform negative acceleration, no acceleration, uniform positive velocity

Explanation:

In a velocity - time graph, the slope of the graph represents acceleration. A straight - line graph with a positive slope (going from the origin or a point with low velocity to a point with higher velocity as time increases) indicates uniform positive acceleration. Here, the graph is a straight line from point A (low velocity, early time) to point B (higher velocity, later time), so the slope is positive and constant, meaning uniform positive acceleration. "Uniform negative acceleration" would be a straight line with a negative slope (velocity decreasing with time). "No acceleration" would be a horizontal line (velocity constant with time). "Uniform positive velocity" would also be a horizontal line (constant positive velocity, no change in velocity over time).

Answer:

A. uniform positive acceleration