Q. A train moves from one station to another 2 hours time. Its speed-time graph during this motion is shown in the figure. The maximum acceleration during the journey is
A) $140\ km\ h^{- 2}$
B) $160\ km\ h^{- 2}$
C) $100\ km\ h^{- 2}$
D) $120\ km\ h^{- 2}$
Explanation
(b) Maximum acceleration will be represented by $CD$ part of the graph
Acceleration $= \frac{dv}{dt} = \frac{(60 - 20)}{0.25} = 160\ km/h^{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.