Question

Solve for the variable
`v_i`.


`(v_f)^2=(v_i)^2+2ad`

Answer 1

±sqrt( (vf) ^2 -2ad)) = vi

Explanation:

(vf) ^2 = (vi)^2 +2ad

Subtract 2ad from each side

(vf) ^2 -2ad = (vi)^2 +2ad -2ad

(vf) ^2 -2ad = (vi)^2

Take the square root of each side

±sqrt((vf) ^2 -2ad)) = sqrt((vi)^2)

±sqrt( (vf) ^2 -2ad)) = vi