Question

help asap please, posting below

Answer 1

\[\Delta= Discriminant= b ^{2}-4.a.c =3^{2}-4.(-2).5\]

Answer 2

For 5.
\[Y= position= -\frac{ 1 }{2 }g.t ^{2}+v _{0}t+y _{0}\]
\[\Delta =b ^{2}-4.a.c=(v _{0})^{2}-4.(-\frac{ 1 }{ 2 }g).y _{0}\]