Question

The x - t graph of a body moving in a straight line is shown in the figure 1. Which one of the graphs shown in figure 2 represent the v - t graph of the motion of the body?

Answer 1

D is correct.x-t shows start line from 0to2means uniform motion hences v is constant so v should be parallel to x axis frm2to6 position  is constant mean body is not moving so velocity is zero from 6to8body is retracing its path hence direction changes so velocity will be negative .