A person pushes a box. He applies a force of 400 newtons, and he pushes the box for a distance of 4 meters. After he stops pushing, the box slides forward another meter. How much work was done by the person?
To calculate the work done by the person, we need to multiply the force applied by the distance over which it was applied.
The force applied by the person is given as 400 newtons.
The distance over which the force was applied is 4 meters.
So, the work done by the person is (400 newtons) * (4 meters) = 1600 joules.
Therefore, the person did 1600 joules of work.