In an explosion, a body breaks up into two pieces of unequal masses. In this case which one of the following statements is correct?

In an explosion, a body breaks up into two pieces of unequal masses. I

1.	In an explosion, a body breaks up into two pieces of unequal masses. In this case which one of the following statements is correct?
Answer» `3v COS theta` `2v cos theta ` `3/2 v cos theta ` `(sqrt3)/(2) v cos theta ` Solution : Velocity at the highest point = HORIZONTAL component of velocity = `V cos theta ` MOMENTUM of shell before explosion `= mv cos theta ` Momentum of two pieces after explosion = ` m/2 (-v cos theta ) + m/2 v ` Law of CONSERVATION of momentum `mv cos theta = - (mv)/(2) cos theta + m/2 v ` ` therefore V = 3V cos theta `