Question

let us think for a while if work is done a book fell off the table to the ground​

Answer 1

Answer:

yes,gravity has done work on the book.

Explanation:

If its mass is m kg

then force acting on it is mg

The Height is h

then work is- F×(s)dispacement

                     = mgh=potential enegy

As its falls its P.E change into K.E