The fig. shows the displacement-time graph of a particle moving on a straight line path. What is the average velocity of the particle over 10 seconds?


(1) 2 m/s             (2) 4 m/s             (3) 6 m/s             (4) 8 m/s

Dear Student

Average Velocity v  =Displacementtotal time
We need to find out the average velocity for whole time interval that is 10 s.

Particle starts from 60 m in 0 seconds and reach to 40 m in 10 seconds after covering distance 50 and 30 m in 6 seconds and 4 seconds respectively.
So net displacement is 60 -40 = 20 m
Time = 10 s
Average velocity  = 20/10 = 2 m /s.

Regards

Total time = 10 s
Hence average displacement = -  20/10 = - 2 m/s

  • 32
Hello Vishesh, in the first 6 seconds displacement made = 10 - 60 = - 50 m
In the next four seconds the displacement made = 40 - 10 = 30 m
Hence net diplacement = - 20 m
Total time = 10 s
Hence average displacement = -  20/10 = - 2 m/s
So option 1 is the best one
  • 12
1.
  • 3
Option 4
  • -9
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