Third equation of motion

Answer 1

v2- u 2 = 2as

since, S (Distance) = Average speed x Time

S = U+V / 2 * T

S = U+V / 2 * V - U / A {since T = V -U / A}

S = V2 - U2 / 2A

2AS = V2 - U2

OR V2 - U2 = As

Hence, Derived.