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.

The object moves forward at 5 m/s, stops, and then changes velocity.

Explanation:

With the information given in the question we can graph the points (image attached).

As we can observe, in the first segment of the graph the velocity is increasing linearly (at a constant rate) and is 5 m/s, then in the second segment we can see the position of the object remains the same from second 2 to second 4, which means the object is stopped.

Finally, in the third and last segment, we can observe a change in velocity (at a negative constant rate, because is decreasing), which is decreasing until the object stops.

representative si the final answer! : )

c)as speed changes, wavelength and frequency change.

everything changes!