A 0.800 kg projectile is launched from the edge of a cliff with an initial kinetic energy of 1875 J and at its highest point is 211.2 m above the launch point.
a) What is the horizontal component of its velocity?
b) What was the vertical component of its velocity just after launch?
c) At one instant during its flight the vertical component of its velocity is 44.11 m/s. At that time, how far is it above or below the launch point?