Question

based on the graph, describe what is happening between 4 and 6 seconds. the object is moving away from the start at a constant speed. the object is not moving. the object is returning to the start at a constant speed. the object is changing speed.

Explanation:

In a position - time graph, the slope of the graph represents the speed of the object. If the slope is zero (a horizontal line), it means the object's position is not changing over time, so the object is not moving. Between 4 and 6 seconds, the graph is a horizontal line (position remains at 12 m), so the object's position doesn't change.

• For the first option: The object is not moving away as position is constant, so this is wrong.
• For the third option: The object is not returning as position is constant, so this is wrong.
• For the fourth option: The slope is zero (constant), so speed is constant (not changing), so this is wrong.

Answer:

The object is not moving.