Question

Study the position-time graph for a bicycle.

A graph titled Position versus Time shows time in seconds on the x axis, numbered 0 to 5, position in meters on the y axis, numbered 0 to 4. The graph has a horizontal line starting at (0, 3) to (5, 3).
Which statement is supported by the graph?

The bicycle has speed but not velocity.
The bicycle is moving at a constant velocity.
The bicycle has a displacement of 3 m.
The bicycle is not in motion.

Answer 1

"The bicycle is not in motion."

Reason: the position stays at 3 m for all times (horizontal line), so the velocity (slope of position vs. time) is 0 m/s. That means the bicycle's speed is 0 and its displacement over the interval shown is 0.