How do find the displacement when it is =ing to distance!!!! I am new here ,so plz bear with me by helping in this simple problem Problem:A ball moes on ta smooth floor in a straight line with uniform velocity 10meters/seconds for 6seconds.At t=6seconds, the ball hits a wall and comes back along the same line to the starting point with same speed.Draw the velocity -time graph and use it to find the total distance travelled by the ball and its displacement. My try: I had tried to make rough graph but the problem is that it is not coming displacement as 0 Because if velocity =10m/s & time=12(total time after returning) .: displacement=v*t=10*12=120 But as it comes back to its origional place ,I don't understand , How does it happen ?& How do I represent it? .Plz can anyone clear the consepts ?!!