The accompanying graph of position $x$ versus time $t$ represents the motion of a particle. If $p$ and $q$ are both positive constants, the expression that best describes the acceleration $a$ of the particle is
The accompanying graph of position $x$ versus time $t$ represents the motion of a particle. If $p$ and $q$ are both positive constants, the expression that best describes the acceleration $a$ of the particle is
- [KVPY 2013]
- A
$a=-p-q t$
- B
$a=-p+q t$
- C
$a=p+q t$
- D
$a=p-q t$
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