Question

a velocity vs. time graph for an object is shown. which parts of the graph represents the object moving at a constant, positive acceleration? w and x x and y y and z w and z

Explanation:

Step1: Recall acceleration - velocity graph relation

Acceleration is the slope of the velocity - time graph. Positive acceleration means positive slope.

Step2: Analyze each segment

In segment W, the velocity is increasing with time, so the slope (acceleration) is positive. In segment X, the velocity is still increasing, so the slope (acceleration) is positive. In segment Y, the velocity is constant, so acceleration is 0. In segment Z, the velocity is decreasing, so acceleration is negative.

Answer:

W and X