the graph above represents the motion of a student walking on a sidewalk. during which periods of time has…

the graph above represents the motion of a student walking on a sidewalk. during which periods of time has the student stopped?\na 7 s - 10 s\nb 0 s - 3 s and 7 s - 8 s\nc 0 s, 7 s, and 10 s only\nd 3 s - 5 s and 8 s - 9 s

the graph above represents the motion of a student walking on a sidewalk. during which periods of time has the student stopped?\na 7 s - 10 s\nb 0 s - 3 s and 7 s - 8 s\nc 0 s, 7 s, and 10 s only\nd 3 s - 5 s and 8 s - 9 s

Answer

Explanation:

Step1: Understand motion - position graph

In a position - time graph, when the object is at rest, the position does not change with time, so the graph is a horizontal line.

Step2: Identify horizontal line segments

In the given graph, the horizontal line segments are from (t = 3s) to (t = 5s) and from (t=8s) to (t = 9s). During these time - intervals, the position of the student (y - value) is constant, which means the student has stopped.

Answer:

D. 3 s - 5 s and 8 s - 9 s