An insulated particle of mass `m` is moving in a horizontal plane (x - y) along X-axis. At a certain height above the ground, it suddenly explodes into two fragments of masses `m//4 and 3 m//4`. An instant later, the smaller fragment is at `Y = + 15`. The larger fragment at this instant is at :A. `y = -5 cm`B. `y = +20 cm`C. `y = + cm`D. `y = -20 cm`

An insulated particle of mass `m` is moving in a horizontal plane (x -

1.	An insulated particle of mass `m` is moving in a horizontal plane (x - y) along X-axis. At a certain height above the ground, it suddenly explodes into two fragments of masses `m//4 and 3 m//4`. An instant later, the smaller fragment is at `Y = + 15`. The larger fragment at this instant is at :A. `y = -5 cm`B. `y = +20 cm`C. `y = + cm`D. `y = -20 cm`
Answer» Correct Answer - A `Deltabar(y) = (m_(1)Deltay_(1) + m_(2)Deltay_(2))/(m_(1) + m_(2))` `rArr 0 = (m)/(4) (15) + (3m)/(4) (y_(2))` `rArr = y_(2) = -5 cm`

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