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2. motion in straight line — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics2. motion in straight line1 Mark
MCQ
Each of the three graphs represents acceleration versus time for an object that already has a positive velocity at time $t_1$. Which graphs show an object whose speed is increasing for the entire time interval between $t_1$ and $t_2$ ?
  • A
    graph $I$, only
  • B
    graphs $I$ and $II$, only
  • C
    graphs $I$ and $III$, only
  • ✓
    graphs $I, II$ and $III$
✓

Answer

Correct option: D.
graphs $I, II$ and $III$
d
Acceleration is positive in all three cases

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