Here's why:

* Newtons (N) are the unit of force. Force is a push or pull that can cause an object to accelerate.

* Meters (m) are the unit of distance or displacement.

* Joules (J) are the unit of energy or work.

The formula for work is:

Work (J) = Force (N) x Distance (m)

Therefore, multiplying newtons and meters gives you the amount of work done.