question_answer

The velocity- time graph (see figure) shows the motion of a cyclist. Find (i) its acceleration (ii) its velocity and (iii) the distance covered by the cyclist in 15 s.

Answer:

                                (i) From the graph, it is clear that velocity is not changing with time i.e., acceleration is zero. (ii) Again from the graph, we can see that there is no change in the velocity with time, so velocity is after 15s will remain same as 20 (iii) Distance covered in 15 s = velocity x time = 20 x 15 = 300m