Question

The diagram shows a motion map.

A long black arrow pointed right labeled x. Above that are 4 green arrows, each shorter ending in one dot. Above the green arrows are 2 yellow arrows pointing left. Farther up is 3 green arrow pointed left, each one longer. Above the green arrows are 3 small yellow arrows pointing left.
Which best describes the motion of the object between 1 and 4 seconds?

The object has decreasing acceleration and increasing velocity.
The object has positive acceleration and eventually stops.
The object has decreasing acceleration and decreasing velocity.
The object has negative acceleration and eventually stops.

Answer 1

Negative acceleration and eventually stops.

Reason: Between 1–4 s the right-pointing arrows get shorter (velocity is positive but decreasing), so the acceleration is opposite the velocity (negative). Later arrows point left, showing the object comes to rest and reverses direction.