Question

Explain positive and negative zero work done

Answer 1

The situations when the work done iszero. ... When 0D less than equal to θ lesser than 90o, work done is positiveas Cos θ is positive.the body is in the upward direction. Since the angle between the force and displacement is 180 D, the work done by the gravitational force on the body isnegative.

Answer 2

HEY MATE____
HERE IS YOURS ANSWER_____
^_^
1-Work done can also be positive or negative. When 0o <= θ < 90o, work done is positive as Cos θ is positive. Work done by a force is positive if the applied force has a component in the direction of the displacement. When a body is falling down, the force of gravitation is acting in the downward direction.

2-The physics definition of "work" is: ... Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work.

HOPE I HELPED...IF YES..
PLZ MARK AS BRAINIEST...☺❤