The small circles in the diagram below represent the positions along the x axis of a body at equal time intervals.Assume the body moves in a straight line.
This diagram is most likely to describe
A)a swimmer swimming laps.
B)an exercise on a rowing machine.
C)a person on a treadmill.
D)a tennis ball during a volley.
E)a runner who tripped,fell,rose,and continued racing.

Question

The small circles in the diagram below represent the positions along the x axis of a body at equal time intervals.Assume the body moves in a straight line. 
This diagram is most likely to describe
A)a swimmer swimming laps. 
B)an exercise on a rowing machine. 
C)a person on a treadmill. 
D)a tennis ball during a volley. 
E)a runner who tripped,fell,rose,and continued racing.

Quizplus · Accepted Answer

The small circles in the diagram represent equal time intervals, indicating that the body is moving with a consistent speed. The fact that the circles abruptly stop and then continue suggests that there was an abrupt change in the body's motion, which could be consistent with a runner tripping, falling, and then continuing to race. The other options (swimming laps, rowing, treadmill, tennis ball during a volley) do not provide a clear explanation for the abrupt changes in motion depicted in the diagram.

The Small Circles in the Diagram Below Represent the Positions