Motion in One Dimension — PHYSICS STD 9 — Question
ICSE BoardEnglish MediumSTD 9PHYSICSMotion in One Dimension1 Mark
MCQ
In velocity time graph, the acceleration is
✓
$-4 m / s ^2$
B
$4 m / s ^2$
C
$10 m / s ^2$
D
zero
✓
Answer
Correct option: A.
$-4 m / s ^2$
(a) $-4 m / s ^2$ Explanation : Acceleration = Slope of velocity time graph $ \begin{array}{l} a=-\frac{20}{5} \quad[\because \text { Velocity is decreasing with time }] \\ a=-4 m / s^2[\because \text { Acceleration will be negative }] \end{array} $
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