Question

the object represented by the graph is not in motion at
a 1 second
b 4 seconds
c 7 seconds
d 11 seconds

Explanation:

Step1: Recall motion - graph concept

In a displacement - time graph, when the object is not in motion, the displacement does not change with time. This is represented by a horizontal line on the displacement - time graph.

Step2: Identify horizontal - line time interval

Looking at the graph, the horizontal line is present from approximately \(t = 5\ s\) to \(t = 10\ s\).

Step3: Check the options

Among the given options, \(t = 7\ s\) lies within the time interval where the object is not in motion (the horizontal - line part of the graph).

Answer:

C. 7 seconds