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AIIMS 2008
Exam
AIIMS
Year
2008
Subject
Physics
Chapter
Motion in One Dimension

AIIMS 2008 · Physics · Motion in One Dimension

The displacement time graph of a particle moving along a straight...

The displacement time graph of a particle moving along a straight line is drawn below. The displacement time graph of a particle moving along a straight line is drawn below.

Options

  1. A(
    OPPQQR
    -0+
    )
  2. B(
    OPPQQR
    +0+
    )
  3. C(
    OPPQQR
    +0-
    )
  4. D(
    OPPQQR
    -0-
    )

Correct answer

C. (

OPPQQR
+0-
)

Step-by-step solution

Acceleration =d2xdt2=\frac{d^2 x}{d t^2} For part OPO P, the acceleration is positive as the velocity is increasing. Slope is increasing. For part PQP Q, the acceleration is zero. Horizontal straight line shows that the velocity is zero. For part QRQ R, acceleration is negative. It is retarded motion. Velocity is decreasing as the slope decreases with time. Hence option (c) is correct.
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