Question

the velocity - time graphs represent the motion of three different objects. identify any object that is getting faster or speeding up. tap on all that apply. tap to select or deselect graphs.

Explanation:

Step1: Understand the concept of speeding - up

In a velocity - time graph, an object is speeding up when the magnitude of velocity is increasing over time. This occurs when the velocity and acceleration have the same sign (both positive or both negative).

Step2: Analyze first graph

In the first graph, the velocity starts from zero and becomes more negative with time. Since the magnitude of the velocity is increasing (going from 0 to a larger negative value), the object is speeding up in the negative direction.

Step3: Analyze second graph

In the second graph, the velocity starts from a negative value and becomes less negative (approaching zero) over time. The magnitude of the velocity is decreasing, so the object is slowing down.

Step4: Analyze third graph

In the third graph, the velocity starts from zero and becomes more positive with time. The magnitude of the velocity is increasing, so the object is speeding up in the positive direction.

Answer:

The first and third graphs represent objects that are getting faster or speeding up.