question_answer 47)

  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 after 15 s will remain same as (iii) Distance covered in 15s= Velocity x Time =20 x 15= 300m