The figure shows a distance vs.time graph of an object with three distinct regions,I,II,and III.
-The object's velocity is positive in region(s)
A)I.
B)II.
C)III.
D)no regions

Question

The figure shows a distance vs.time graph of an object with three distinct regions,I,II,and III.  ​
-The object's velocity is positive in region(s)
A)I. 
B)II. 
C)III. 
D)no regions

Quizplus · Accepted Answer

The object's velocity is positive in any region where the distance vs. time graph has a positive slope (i.e. the object is moving forward). In region I, the slope is positive, so the velocity is positive. In region II, the slope is zero, so the velocity is neither positive nor negative. In region III, the slope is negative, so the velocity is negative. Therefore, the object's velocity is only positive in region I.

The Figure Shows a Distance Vs