A smooth spherical object (the first object) is projected horizontally from a vertical height of $26.83$ metres above horizontal ground with a launch speed of $23.44\textrm{ ms}^{-1}$.
A second identical object is projected from ground level with launch speed, $V$ and at an angle above the horizontal. Calculate the launch angle in radians, if the second object is to have the same horizontal range and same time of flight as the first object. Given $g=9.81$.