Halp!!!!

With what velocity must an object be thrown upward from the ground to reach a maximum height of 550 feet?

idiots, all of you. except >>6 and >>7, who already gave the answer.

The formula you want is v^2 = u^2 + 2as. u=0, a=g, s=550 feet=167.64 meters (stupid fucking imperial system)

v = sqrt(2*9.8m/s*167.64m) = 57.32 m/s = 128 mph