Question

Displacement time graph of a particle moving in a straight line is shown in figure. Select correct alternative

• A. Work done by all forces in region $OA$ is positive
• B. Work done by all forces in region $AB$ is negative
• C. Work done by all forces in region $BC$ is positive
• D. Work done by all forces in region $AB$ is positive

Answer 1

The correct option is D Work done by all forces in region $AB$ is positive

During $AB$ velocity is increasing

$\therefore$ force is increasing the speed

$\therefore$ work is positive

$\therefore$ Option $D$ is correct .