question_answer 44)

  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                      [Since, displacement and time is zero] (ii) Velocity after 50s,   [Given, displacement = 100m ]                                           (iii) Velocity after    [Here, displacement = zero and time = 100s] Therefore,

v	0	2	0
t	0	50	100

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