A 20 kg. projectile is fired at an angle of 60 degrees abovehorizontal with a speed of 80 m/s. At the highest point of thetrajectory the projectile explodes into two fragments with equalmass, one of which falls with zero intitial speed, ignore airresistance.
a) how far from the point of firing does the other fragmentstrike if the terrain is level?
b) how much energy is released during explosion?