Displacement time graph of a particle moving in a straight line is as shown in figure. Select the correct alternative(s)

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work done by all the forces in region AB is not zero

work done by all the forces in region AB is zero

work done by all the forces in region BC is negative

work done by all the forces in region OA is negative

answer is C, B.

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Detailed Solution

In a region OA particle has accelerated

In a region AB particle has uniform velocity

While in region BD particle is declaration work done is +ve

In region OA

$W =$ zero in region AB

$W = - ve$ In region BC

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