The graph below plots the position versus time for a particular particle moving along the x-axis. What is the average velocity over the following time intervals (in m/s)? (Indicate the direction with the signs of your answers.) A coordinate plane has a horizontal axis labeled t (s) and a vertical axis labeled x (m). There are five connected line segments. The first goes from (0, 0) to (2.00, 14.0); the second from (2.00, 14.0) to (4.00, 8.00); the third from (4.00, 8.00) to (5.00, 8.00); the fourth from (5.00, 8.00) to (7.00, 6.00); and the fifth from (7.00, 6.00) to (8.00, 0)