When does a force do work ?How is this work measured

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Solution

Dear student,
The work done by a constant force of magnitude F on a point that moves a displacement (not distance) s in the direction of the force is the product $W = F \times S$
In S.I. unit system he joule is the unit of measure for work. In physics, a force does work on an object when the object moves in the direction of the force.
Regards

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why and how is there space between 2 objects even when they are in contact ?How does this force work?

Statement 1: Force acting on a body increases its kinetic energy from 200 J to 400 J and this force does a positive work on the body.

Statement 2: A force does a positive work on an object when the displacement is in the direction of force itself.

How can the work done be measured when force is applied at an angle to the direction of displacement.

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