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===Example Calculations===
{| class="wikitable"
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| style="height:20px; width:200px; text-align:center;" |'''A person lifts a 40N box by a height of 1.2m. Calculate the work done by the person against gravity.'''
| style="height:20px; width:200px; text-align:center;" |'''The brakes on a car apply a force of 10,000N. The car travels a distance of 15m braking. Calculate the work done by the brakes.'''
| style="height:20px; width:200px; text-align:center;" |'''A person carries a 20N box along a horizontal path of 20m.'''
|-
| style="height:20px; width:200px; text-align:left;" |
Force = 40N
Distance moved in the direction of the force = 1.2m
<math> W = Fd</math>
<math> W = 40 \times 1.2</math>
<math> W = 48J</math>
| style="height:20px; width:200px; text-align:left;" |
Force = 10,000N
Distance moved in the direction of the force = 15m
<math> W = Fd</math>
<math> W = 10,000 \times 15</math>
<math> W = 15,000J</math>
| style="height:20px; width:200px; text-align:left;" |
Force = 40N
Distance moved in the direction of the force = 0m
<math> W = Fd</math>
<math> W = 20 \times 0</math>
<math> W = 0J</math>
No '''work''' has been done because the movement is not in the direction of the [[force]]. The [[weight]] acts downwards but the movement was horizontal.
|}
: 1. A person lifts a 40N box by a height of 1.2m. Calculate the work done by the person against gravity.
: Force = 40N