Aposition-time graph is shown below:

a position versus time graph is shown with y-axis labeled position in meters up to 15 and x-axis labeled time in seconds up to 6. the points plotted are 0, 0 and 1, 5 and 2, 10, and 3, 10, and 4, 10, and 5, 5, and 6, 0. three straight lines connect the points.

which statement accurately describes the velocity of the object in the graph above over the six seconds?

the object moves forward at 5 m/s, stops, and then changes velocity.
the object moves backward, stops, and then continues forward at 5 m/s.
the object is at rest for 2 seconds and then moves at forward at 5 m/s.
the object stops and then returns to its original position and velocity.