## Substituting into Equations

If you are trying to complete a question that involves using equations make sure you follow these simple steps:

1) Write down the values you have

2) Then write down the equation you need to solve it and rearrange it if necessary

3) Now replace the words in the equation with the numbers

Don't forget the units!

1) Write down the values you have

**eg. Mass= 5kg, Gravity=10m/s/s, Weight=?**2) Then write down the equation you need to solve it and rearrange it if necessary

**eq. Weight = Mass x g**3) Now replace the words in the equation with the numbers

**eg. Weight = 5 x 10 =50N**Don't forget the units!