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.

The object is not moving.

Explanation:

Since the distance hasn't changed from 4 seconds to 6 seconds, we know that the distance from the start stays the same between the time period. The object isn't moving away or moving closer at a constant speed, but is staying the same, constant distance away at a constant speed. Therefore, the object isn't moving.

The object is not moving.

Explanation:

Since the position doesn't change during 4-6 (remains constant at 12m) it tells us that object is not moving and remaining at constant distance from start point.

particle   p is an electron and particle q is a neutron