question_answer

A projectile of mass M is fired so that the horizontal range is 4 km At the highest point the projectile explodes in two parts of masses M/4 and 3M/4 respectively and the heavier part states falling down vertically with zero initial speed. The horizontal range (distance from point of firing of the lighter part is): [JEE ONLINE 23-04-2013]

A) 16 km

B) 1 km

C)             10 km

D) 2 km