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Physics-

General

Easy

Question

The graph between the displacement $x$ and $t$ for a particle moving in a straight line is shown in figure. During the interval $O A comma A B comma B C$ and $C D comma$ the acceleration of the particle is

$O A comma blank A B comma blank B C$ , $C D$

+ 0 + +
- 0 + 0
+ 0 - +
- 0 - 0

The correct answer is: - 0 + 0

Region $O A$ shows that graph bending toward time axis $i. e.$ acceleration is negative.
Region $A B$ shows that graph is parallel to time axis $i. e. blank$ velocity is zero. Hence acceleration is zero.
Region $B C$ shows that graph is bending towards displacement axis $i. e.$ acceleration is positive.
Region $C D blank$ shows that graph having constant slope $i. e.$ velocity is constant. Hence acceleration is zero

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