3) Consider the physical quantities s, v, a, and t with dimensions [s] = L, [v] = LT -1, [a] =LT -2, and = T. Determine whether each of the following equations is dimensionally consistent. (a) v2 = 2as ; (b) s = vt2 + 0.5at2 ; (c) v = s/t; (d) a = v/t