Respuesta :
your answer is B because The force exerted by the person is an upward force equal to the weight of the box, and that force is perpendicular to the motion. It changes the direction of the motion, but it does no work on the object.
For a force to do work on an object, it must move in the same direction as the motion of the object. Option B is correct.
What is work done?
Work done is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.
Work may be zero, positive and negative. it depends on the direction of the body displaced. if the body is displaced in the same direction of the force it will be positive.
The force must act in the direction of an object’s motion is required for a force to do work on an object
Hence, option B is correct.
To learn more about the work done refer to the link ;
https://brainly.com/question/3902440
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