The unit for **work** **done** is the **joule (J)**, or **Newton** **meter (N-m)**. One **joule** is equal to the amount of **work** that is **done** when 1 **N** of **force** moves an object over a **distance** of 1 **m**.

## Demo

In this tutorial you will learn how to calculate the **work done** to move an object through a known **distance**.

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The formula for this equation is written like this:

**w = f x d**

## Chilled practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

How much work has been done if a car is pushed along the road 550 **cm** with a force of 400** N** ?

## Frozen practice question

Copy out the question and attempt to calculate the answer before watching the solution. Write down the equation and show all of your working, remember to add the units to your answer, this routine will guarantee you maximum marks in an exam. Mark your solution and correct if needed.

75 **J** of work is done pulling a trolley 150 **cm**. Calculate the force applied.

## Science in context

**Work** can be calculated with the **equation**: **Work** = **Force** × **Distance**. The unit for **work** is the **joule (J**), or Newton • meter (N • m). One joule is equal to the amount of **work** that is **done** when 1** N** of **force** moves an object over a **distance** of 1 **m**.