A projectile of mass 6 kg is fired with an initial speed of 74 m/s at an angle of 20 degrees with the horizontal. At the top of its trajectory, the projectile explodes into two fragments of masses 3.7 kg and 2.3 kg . The 2.3 kg fragment lands on the ground directly below the point of explosion 4.4 s after the explosion. The acceleration of gravity is 9.81 m/s^2 . A) Find the magnitude of the velocity of the 3.7 kg fragment immediatedly after the explo- sion. Answer in units of m/s. B) Find the distance between the point of firing and the point at which the 3.7 kg fragment strikes the ground. Answer in units of km. C) How much energy was released in the explo- sion? Answer in units of kJ. Any help appreciated.