To solve for t using the quadratic formula, what expressions for a, b and c should be used?

Answer:
[tex]a=-4.5,b=v,c=0[/tex]
Step-by-step explanation:
The given formula for the height of the projectile is
[tex]h=-4.9t^2+vt[/tex]
This is a quadratic equation in [tex]t[/tex].
To solve for t, we set the equation to zero to get;
[tex]-4.9t^2+vt=0[/tex]
where [tex]a=-4.9[/tex] is the coefficient of [tex]t^2[/tex], [tex]b=v[/tex] is the coefficient of [tex]t[/tex], and [tex]c=0[/tex] is the constant term.
The correct answer is C