You push a book and it leaves your hand then slides along the table. The book covers a total distance of 1 m. The distance that you use to determine the work that you did is than 1 m.
Question
You push a book and it leaves your hand then slides along the table. The book covers a total distance of 1 m. The distance that you use to determine the work that you did is than 1 m.
Solution
The distance you use to determine the work you did is the distance over which you applied the force. In this case, it would be the distance the book traveled while it was still in contact with your hand. Once the book leaves your hand and is sliding on the table, you are no longer doing work on it because you are not applying a force over a distance. Therefore, the distance used to calculate the work you did is less than 1 m.
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