Question

Define positive negative and zero work done ​

Answer 1

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Work done can also be positive or negative. ... 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. The displacement is also in the downward direction.

.Work is zero if applied force is zero (W=0 if F=0): If a block is moving on a smooth horizontal surface (frictionless), no work will be done. ... Work done is zero when displacement is zero. This happens when a man pushes a wall. There is no displacement of the wall. Thus, there is no work done.

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$\huge\bold\blue{}$$<marquee>★ItzDeepakshi★</marquee>$

Answer 2

I don't know the positive work done