What is Newton's formula for projectile motion?
His formula is just just an equation of a parabola
if A is the angle at which the projectile is fired and V is the velocity and t is the time, g is the acceleration due to gravity
then, the equation is
play around this, set y to zero you get x as the maximum range.
you can solve for the vertex, and you will get the max. height reach at a horizontal distance covered.....