# For the equation #v_f^2=v_i^2 + 2ad#, how do you solve for #v_i#?

##### 1 Answer

Jun 29, 2015

You isolate

#### Explanation:

The equation

establishes a relationship between an *accelerating object's* initial and final speeds and the total *displacement*.

So, to solve for

then take the square root from both sides of the equation