a position versus time graph is shown: (2 points) which statement accurately describes the motion of the object in the graph above? it moved from 3 cm to 10 cm at a constant speed of 2 cm/s. it moved from 0 cm to 6 cm at an average speed of 1 cm/s. it moved from 0 cm to 10 cm at an average speed of 2 cm/s. it moved from 3 cm to 6 cm at a constant speed of 3 cm/s