A stationary bomb of mass 10 kg suddenly explode in two fragment of 4 kg and 6 kg. Ratio of their velocity will b e .....

A stationary bomb of mass 10 kg suddenly explode in two fragment of 4

1.	A stationary bomb of mass 10 kg suddenly explode in two fragment of 4 kg and 6 kg. Ratio of their velocity will b e .....
Answer» `3:2` `2:5` `3:5` `12:5` Solution :LET mass ofbomb M = 10 kgandinitialvelocityv=0 massof secondfragment`m_(2) = 6` kgand velocityBy lawof conservation of linearmomentum `MV = m_(1) v_(1) +m_(2) v_(2)` `M xx 0 = m_(1) v_(1) + m_(2) v_(2)` `m_(1) v_(1) -m_(2)v_(2)` `(v_(1))/(v_(2)) =-(m_(2))/( m_(1))` `\|(v_(1))/(v_(2))\| = (6)/(4)` `v_(1) :v_(2)= 3: 2`