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
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!
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!