How Does Direction Affect Scalar Work in Physics?

[Misr]

hello people ,

We know that work done is scalar because it’s the product of two vector quantities so it needs only magnitude to be defined.
But look …W = Fd cos theta
When the acting force is in the opposite direction to displacement then theta=180

Therefore the work done becomes negative in this case so work is affected by the directions and its scalar so how?

 

[Studiot]

Would you like to draw a sketch of a force with its point of application being moved 180 to its line of action?

You should see the answer immediately.