Here is a question where we are asked to make a the subject of the formula V=u+at.
“This question is derived from the first equation of motion V=u+at”.
If you are not familiar with the topic subject of the formula, this question will serve as an example for you.
This question might also be given this way.
Rearrange v=u+at to make a the subject
We won’t cover everything that deals with the main topic but this question will be treated perfectly.
Read: How to change the root of quadratic equation
Make a The Subject Of The Formula V=u+at
Let me given you this hint. Whenever you are dealing with fractions, the first thing you do is to find the the LCM.
If the question given has either plus (+) or minus (-) add the values or substract them if they are like terms. In case there is an equal sign, collect like terms and Chang the sign I front of the number or variable.
Take for instance we are to make u the subject of the formula in this question
v=u+at
All you need to do is move the “at” to the other side. While moving this make sure you change the sign i.e from plus(+) to minus (-). So we now have v-at=u
If two alphabets or one alphabet and number are together are sticked together always apply division. E.g 2s=10 make s the subject of the formula. What you have to do here is to divide both side with the co-efficient of s which I 2.
2s/2 = 10/2
S=5.
The full guide on the subject of the formula will be dropped soon
Back to our Make a the subject of the formula v=u+at
- Step 1: move u to the other side. v-u=at
- Step 2: Divide both side by the co-efficient of a. v-u/t =at/t
- Finally we arrive at a=v-u/t
Exercise
You can also try to solve these questions on the change of subject of the formula below.
1. Make h the subject of the formula
u=h+vt
2. Make n the subject of the formula
at=n+z
Kindly drop your answer in the comment box below.
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