JAMB Physics 2017 Paper

Concept:Uniform acceleration follows the standard equations of motion.Explanation:The equations for a body moving with uniform acceleration are:$v = u + at$$s = ut + \frac{1}{2}at^2$$v^2 = u^2 + 2as$Here, $u$ is initial velocity, $v$ is final velocity, $s$ is displacement, $t$ is time, and $a$ is acceleration.Option B, $v^2 = u^2 + 2as$, is correctly written.Option C, $s = ut + \frac{1}{2}at^2$, is correctly written.Option D, $v^2 - u^2 = 2as$, is the same as Option B and is correct.Option A, $a = v^2 - \frac{u^2}{2}$, is not a valid equation of motion.The correct expression from $v^2 = u^2 + 2as$ is $a = \frac{v^2 - u^2}{2s}$.Answer:Option A is the incorrect formula.