The product of force exerted by a machine and the distance over which it is applied is equal to work.

Here's why:

* Work is a measure of energy transfer that occurs when a force is applied over a distance.

* Force is a push or pull that can cause an object to accelerate.

* Distance is the amount of space moved.

Formula:

Work (W) = Force (F) x Distance (d)

Example:

If you push a box with a force of 10 Newtons (N) for a distance of 5 meters (m), the work done is:

W = 10 N x 5 m = 50 Joules (J)