1.29 A BODY IS THROWN FROM THE SURFACE OF THE EART AT ANGLE a to the horizontal with an intial velocity v0 assuming the air drag to be neglibile find (a) the time of motion (B) the maximum height of ascent and the horizontal range at what value of angle a they will equal to each (C) the curvature of radii of trajectory at its intial point of the peak

 here is my solution  by part  a,b,c,d