question_answer

  A girl walks along a straight path to drop a letter in the letter  box  and comes back to her initial   position. Her displacement -time  graph is shown in figure. Plot a velocity-time graph for the same.             

Answer:

                    From the graph (i) Initial velocity, u = 0 (ii) Velocity after 50 s, (iii) Velocity after 100 s, v (1) Therefore,

v	0	2	0
t	0	50	100

Velocity-time graph plotted from the above data is shown below.