Make s the subject of the formula
v2 = u2 + 2as. The question is asking us to make s the subject of the formula and so we must find the equation equal to s. The golden rule of the rearranging topic is whatever you do to one side of the equation you must do to the other. We can see that the right hand side (RHS) of the equation contains the s. The RHS has two parts, u2 and 2as. Our first step is to therefore subtract u2 from both sides. v2 - u2 = u2 - u2 + 2as . The original u2 on the RHS therefore cancels out the subtraction leaving the equation v2 - u2 = 2as. 2as is the equivalent of 2 x a x s. To reduce this equation down to the singular s we must divide 2as by 2a. (v2 - u2 )/2a = 2as/2a. (v2 - u2 )/2a = s
