1. The problem statement, all variables and given/known data The position versus time for a certain particle moving along the x axis is shown in the figure below. http://img87.imageshack.us/img87/6101/physicswg4.th.jpg [Broken]http://g.imageshack.us/thpix.php [Broken] Find the average velocity in the following time intervals. (a) 0 to 4 s _____ m/s (b) 0 to 5 s _____ m/s (c) 4 s to 5 s _____ m/s (d) 5 s to 7 s ______ m/s (e) 0 to 8 s ______ m/s 2. Relevant equations I thought the equation to use would be x(t_2) - x(t_1) / t_2 - t_1 3. The attempt at a solution After following that equation, I got 5 m/s for (a), but it was incorrect. Could someone PLEASE tell me what I did wrong. Thanks.