Displacement time graph of a particle moving in a straight line is as shown in figure. Select the correct alternative (s) : .A. Work done by all the forces in region `OA` and `BC` is positiveB. Work done by all the forces in region `AB` is zeroC. Work done by the forces in region `BC` is negativeD. Work done by all the forces in region `OA` is negative.

Displacement time graph of a particle moving in a straight line is as

1.	Displacement time graph of a particle moving in a straight line is as shown in figure. Select the correct alternative (s) : .A. Work done by all the forces in region `OA` and `BC` is positiveB. Work done by all the forces in region `AB` is zeroC. Work done by the forces in region `BC` is negativeD. Work done by all the forces in region `OA` is negative.
Answer» Correct Answer - B In region `OA` particle is acceleratedin region `AB` particle has uniform velocity while in region `BD` particle is deceleration, Therefore, work done is positive in region `OA`, zero in region `AB` and negative in region `BC`.

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