In a volcanic eruption, a 2.40 × 103 kg boulder is thrown vertically upward into the air. At its highest point, it suddenly explodes (due to trapped gases) into two fragments, one being three times the mass of the other. The lighter fragment starts out with only horizontal velocity and lands 253mdirectly north of the point of the explosion.
Part A: Where will the other fragment land? Neglect any air resistance.